Organic electroluminescent materials and devices

ABSTRACT

Novel iridium complexes containing phenylpyridine and pyridyl aza-benzo fused ligands are described. These complexes are useful as light emitters when incorporated into OLEDs.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 15/455,838, filed Mar. 10, 2017, which is a continuation of U.S. patent application Ser. No. 13/673,338, filed Nov. 9, 2012, now U.S. Pat. No. 9,634,264, the entire contents of which is incorporated herein by reference.

PARTIES TO A JOINT RESEARCH AGREEMENT

The claimed invention was made by, on behalf of, and/or in connection with one or more of the following parties to a joint university corporation research agreement: Regents of the University of Michigan, Princeton University, The University of Southern California, and the Universal Display Corporation. The agreement was in effect on and before the date the claimed invention was made, and the claimed invention was made as a result of activities undertaken within the scope of the agreement.

FIELD OF THE INVENTION

The present invention relates to iridium complexes containing aza-benzo fused ligands. In particular, iridium complexes containing both phenylpyridine ligands and aza-benzo fused ligands were found to be useful as emitters when used in OLED devices.

BACKGROUND

Opto-electronic devices that make use of organic materials are becoming increasingly desirable for a number of reasons. Many of the materials used to make such devices are relatively inexpensive, so organic opto-electronic devices have the potential for cost advantages over inorganic devices. In addition, the inherent properties of organic materials, such as their flexibility, may make them well suited for particular applications such as fabrication on a flexible substrate. Examples of organic opto-electronic devices include organic light emitting devices (OLEDs), organic phototransistors, organic photovoltaic cells, and organic photodetectors. For OLEDs, the organic materials may have performance advantages over conventional materials. For example, the wavelength at which an organic emissive layer emits light may generally be readily tuned with appropriate dopants.

OLEDs make use of thin organic films that emit light when voltage is applied across the device. OLEDs are becoming an increasingly interesting technology for use in applications such as flat panel displays, illumination, and backlighting. Several OLED materials and configurations are described in U.S. Pat. Nos. 5,844,363, 6,303,238, and 5,707,745, which are incorporated herein by reference in their entirety.

One application for phosphorescent emissive molecules is a full color display. Industry standards for such a display call for pixels adapted to emit particular colors, referred to as “saturated” colors. In particular, these standards call for saturated red, green, and blue pixels. Color may be measured using CIE coordinates, which are well known to the art.

One example of a green emissive molecule is tris(2-phenylpyridine) iridium, denoted Ir(ppy)₃, which has the following structure:

In this, and later figures herein, we depict the dative bond from nitrogen to metal (here, Ir) as a straight line.

As used herein, the term “organic” includes polymeric materials as well as small molecule organic materials that may be used to fabricate organic opto-electronic devices. “Small molecule” refers to any organic material that is not a polymer, and “small molecules” may actually be quite large. Small molecules may include repeat units in some circumstances. For example, using a long chain alkyl group as a substituent does not remove a molecule from the “small molecule” class. Small molecules may also be incorporated into polymers, for example as a pendent group on a polymer backbone or as a part of the backbone. Small molecules may also serve as the core moiety of a dendrimer, which consists of a series of chemical shells built on the core moiety. The core moiety of a dendrimer may be a fluorescent or phosphorescent small molecule emitter. A dendrimer may be a “small molecule,” and it is believed that all dendrimers currently used in the field of OLEDs are small molecules.

As used herein, “top” means furthest away from the substrate, while “bottom” means closest to the substrate. Where a first layer is described as “disposed over” a second layer, the first layer is disposed further away from substrate. There may be other layers between the first and second layer, unless it is specified that the first layer is “in contact with” the second layer. For example, a cathode may be described as “disposed over” an anode, even though there are various organic layers in between.

As used herein, “solution processible” means capable of being dissolved, dispersed, or transported in and/or deposited from a liquid medium, either in solution or suspension form.

A ligand may be referred to as “photoactive” when it is believed that the ligand directly contributes to the photoactive properties of an emissive material. A ligand may be referred to as “ancillary” when it is believed that the ligand does not contribute to the photoactive properties of an emissive material, although an ancillary ligand may alter the properties of a photoactive ligand.

As used herein, and as would be generally understood by one skilled in the art, a first “Highest Occupied Molecular Orbital” (HOMO) or “Lowest Unoccupied Molecular Orbital” (LUMO) energy level is “greater than” or “higher than” a second HOMO or LUMO energy level if the first energy level is closer to the vacuum energy level. Since ionization potentials (IP) are measured as a negative energy relative to a vacuum level, a higher HOMO energy level corresponds to an IP having a smaller absolute value (an IP that is less negative). Similarly, a higher LUMO energy level corresponds to an electron affinity (EA) having a smaller absolute value (an EA that is less negative). On a conventional energy level diagram, with the vacuum level at the top, the LUMO energy level of a material is higher than the HOMO energy level of the same material. A “higher” HOMO or LUMO energy level appears closer to the top of such a diagram than a “lower” HOMO or LUMO energy level.

As used herein, and as would be generally understood by one skilled in the art, a first work function is “greater than” or “higher than” a second work function if the first work function has a higher absolute value. Because work functions are generally measured as negative numbers relative to vacuum level, this means that a “higher” work function is more negative. On a conventional energy level diagram, with the vacuum level at the top, a “higher” work function is illustrated as further away from the vacuum level in the downward direction. Thus, the definitions of HOMO and LUMO energy levels follow a different convention than work functions.

More details on OLEDs, and the definitions described above, can be found in U.S. Pat. No. 7,279,704, which is incorporated herein by reference in its entirety.

SUMMARY OF THE INVENTION

A compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), and having the structure:

with Formula I is provided. In the compound of Formula I, A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ comprise carbon or nitrogen, and at least one of A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ is nitrogen. Ring B is bonded to ring A through a C—C bond, the iridium is bonded to ring A through a Ir—C bond. X is O, S, or Se. R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution, and any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring. R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, and n is an integer from 1 to 3.

In one aspect, n is 1. In one aspect, the compound has the formula:

In one aspect, the compound has the formula:

In one aspect, only one of A¹ to A⁸ is nitrogen. In one aspect, only one of A⁵ to A⁸ is nitrogen. In one aspect, X is O.

In one aspect, R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, alkyl, and combinations thereof. In one aspect, R² is alkyl.

In one aspect, the alkyl is deuterated or partially deuterated. In one aspect, R³ is alkyl.

In one aspect, the alkyl is deuterated or partially deuterated.

In one aspect, L_(A) is selected from the group consisting of:

In one aspect, L_(A) is selected from the group consisting of:

In one aspect, L_(B) is selected from the group consisting of:

In one aspect, the compound is selected from the group consisting of:

In one aspect, a first device is provided. The first device comprises a first organic light emitting device, further comprising, an anode, a cathode, and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), having the structure:

with Formula I is provided. In the compound of Formula I, A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ comprise carbon or nitrogen, and at least one of A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ is nitrogen. Ring B is bonded to ring A through a C—C bond, the iridium is bonded to ring A through a Ir—C bond. X is O, S, or Se. R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution, and any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring. R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, and n is an integer from 1 to 3.

In one aspect, the first device is a consumer product.

In one aspect, the first device is an organic light-emitting device.

In one aspect, the first device comprises a lighting panel.

In one aspect, the organic layer is an emissive layer and the compound is an emissive dopant.

In one aspect, the organic layer is an emissive layer and the compound is a non-emissive dopant.

In one aspect, the organic layer further comprises a host.

In one aspect, the host comprises a triphenylene containing benzo-fused thiophene or benzo-fused furan, wherein any substituent in the host is an unfused substituent independently selected from the group consisting of C_(n)H_(2n+1), OC_(n)H_(2n+1), OAr₁, N(C_(n)H_(2n+1))₂, N(Ar₁)(Ar₂), CH═CH—C_(n)H_(2n+1), C≡CHC_(n)H_(2n+1), Ar₁, Ar₁—Ar₂, C_(n)H_(2n)—Ar₁, or no substitution, wherein n is from 1 to 10; and wherein Ar₁ and Ar₂ are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.

In one aspect, the host comprises at least one chemical group selected from the group consisting of carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

In one aspect, the host is selected from the group consisting of:

-   -   and combinations thereof.

In one aspect, the host comprises a metal complex.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an organic light emitting device.

FIG. 2 shows an inverted organic light emitting device that does not have a separate electron transport layer.

FIG. 3 shows a compound of Formula I.

DETAILED DESCRIPTION

Generally, an OLED comprises at least one organic layer disposed between and electrically connected to an anode and a cathode. When a current is applied, the anode injects holes and the cathode injects electrons into the organic layer(s). The injected holes and electrons each migrate toward the oppositely charged electrode. When an electron and hole localize on the same molecule, an “exciton,” which is a localized electron-hole pair having an excited energy state, is formed. Light is emitted when the exciton relaxes via a photoemissive mechanism. In some cases, the exciton may be localized on an excimer or an exciplex. Non-radiative mechanisms, such as thermal relaxation, may also occur, but are generally considered undesirable.

The initial OLEDs used emissive molecules that emitted light from their singlet states (“fluorescence”) as disclosed, for example, in U.S. Pat. No. 4,769,292, which is incorporated by reference in its entirety. Fluorescent emission generally occurs in a time frame of less than 10 nanoseconds.

More recently, OLEDs having emissive materials that emit light from triplet states (“phosphorescence”) have been demonstrated. Baldo et al., “Highly Efficient Phosphorescent Emission from Organic Electroluminescent Devices,” Nature, vol. 395, 151-154, 1998; (“Baldo-I”) and Baldo et al., “Very high-efficiency green organic light-emitting devices based on electrophosphorescence,” Appl. Phys. Lett., vol. 75, No. 3, 4-6 (1999) (“Baldo-II”), which are incorporated by reference in their entireties. Phosphorescence is described in more detail in U.S. Pat. No. 7,279,704 at cols. 5-6, which are incorporated by reference.

FIG. 1 shows an organic light emitting device 100. The figures are not necessarily drawn to scale. Device 100 may include a substrate 110, an anode 115, a hole injection layer 120, a hole transport layer 125, an electron blocking layer 130, an emissive layer 135, a hole blocking layer 140, an electron transport layer 145, an electron injection layer 150, a protective layer 155, a cathode 160, and a barrier layer 170. Cathode 160 is a compound cathode having a first conductive layer 162 and a second conductive layer 164. Device 100 may be fabricated by depositing the layers described, in order. The properties and functions of these various layers, as well as example materials, are described in more detail in U.S. Pat. No. 7,279,704 at cols. 6-10, which are incorporated by reference.

More examples for each of these layers are available. For example, a flexible and transparent substrate-anode combination is disclosed in U.S. Pat. No. 5,844,363, which is incorporated by reference in its entirety. An example of a p-doped hole transport layer is m-MTDATA doped with F₄-TCNQ at a molar ratio of 50:1, as disclosed in U.S. Patent Application Publication No. 2003/0230980, which is incorporated by reference in its entirety. Examples of emissive and host materials are disclosed in U.S. Pat. No. 6,303,238 to Thompson et al., which is incorporated by reference in its entirety. An example of an n-doped electron transport layer is BPhen doped with Li at a molar ratio of 1:1, as disclosed in U.S. Patent Application Publication No. 2003/0230980, which is incorporated by reference in its entirety. U.S. Pat. Nos. 5,703,436 and 5,707,745, which are incorporated by reference in their entireties, disclose examples of cathodes including compound cathodes having a thin layer of metal such as Mg:Ag with an overlying transparent, electrically-conductive, sputter-deposited ITO layer. The theory and use of blocking layers is described in more detail in U.S. Pat. No. 6,097,147 and U.S. Patent Application Publication No. 2003/0230980, which are incorporated by reference in their entireties. Examples of injection layers are provided in U.S. Patent Application Publication No. 2004/0174116, which is incorporated by reference in its entirety. A description of protective layers may be found in U.S. Patent Application Publication No. 2004/0174116, which is incorporated by reference in its entirety.

FIG. 2 shows an inverted OLED 200. The device includes a substrate 210, a cathode 215, an emissive layer 220, a hole transport layer 225, and an anode 230. Device 200 may be fabricated by depositing the layers described, in order. Because the most common OLED configuration has a cathode disposed over the anode, and device 200 has cathode 215 disposed under anode 230, device 200 may be referred to as an “inverted” OLED. Materials similar to those described with respect to device 100 may be used in the corresponding layers of device 200. FIG. 2 provides one example of how some layers may be omitted from the structure of device 100.

The simple layered structure illustrated in FIGS. 1 and 2 is provided by way of non-limiting example, and it is understood that embodiments of the invention may be used in connection with a wide variety of other structures. The specific materials and structures described are exemplary in nature, and other materials and structures may be used. Functional OLEDs may be achieved by combining the various layers described in different ways, or layers may be omitted entirely, based on design, performance, and cost factors. Other layers not specifically described may also be included. Materials other than those specifically described may be used. Although many of the examples provided herein describe various layers as comprising a single material, it is understood that combinations of materials, such as a mixture of host and dopant, or more generally a mixture, may be used. Also, the layers may have various sublayers. The names given to the various layers herein are not intended to be strictly limiting. For example, in device 200, hole transport layer 225 transports holes and injects holes into emissive layer 220, and may be described as a hole transport layer or a hole injection layer. In one embodiment, an OLED may be described as having an “organic layer” disposed between a cathode and an anode. This organic layer may comprise a single layer, or may further comprise multiple layers of different organic materials as described, for example, with respect to FIGS. 1 and 2.

Structures and materials not specifically described may also be used, such as OLEDs comprised of polymeric materials (PLEDs) such as disclosed in U.S. Pat. No. 5,247,190 to Friend et al., which is incorporated by reference in its entirety. By way of further example, OLEDs having a single organic layer may be used. OLEDs may be stacked, for example as described in U.S. Pat. No. 5,707,745 to Forrest et al, which is incorporated by reference in its entirety. The OLED structure may deviate from the simple layered structure illustrated in FIGS. 1 and 2. For example, the substrate may include an angled reflective surface to improve out-coupling, such as a mesa structure as described in U.S. Pat. No. 6,091,195 to Forrest et al., and/or a pit structure as described in U.S. Pat. No. 5,834,893 to Bulovic et al., which are incorporated by reference in their entireties.

Unless otherwise specified, any of the layers of the various embodiments may be deposited by any suitable method. For the organic layers, preferred methods include thermal evaporation, ink-jet, such as described in U.S. Pat. Nos. 6,013,982 and 6,087,196, which are incorporated by reference in their entireties, organic vapor phase deposition (OVPD), such as described in U.S. Pat. No. 6,337,102 to Forrest et al., which is incorporated by reference in its entirety, and deposition by organic vapor jet printing (OVJP), such as described in U.S. patent application U.S. Pat. No. 7,431,968, which is incorporated by reference in its entirety. Other suitable deposition methods include spin coating and other solution based processes. Solution based processes are preferably carried out in nitrogen or an inert atmosphere. For the other layers, preferred methods include thermal evaporation. Preferred patterning methods include deposition through a mask, cold welding such as described in U.S. Pat. Nos. 6,294,398 and 6,468,819, which are incorporated by reference in their entireties, and patterning associated with some of the deposition methods such as ink jet and OVJD. Other methods may also be used. The materials to be deposited may be modified to make them compatible with a particular deposition method. For example, substituents such as alkyl and aryl groups, branched or unbranched, and preferably containing at least 3 carbons, may be used in small molecules to enhance their ability to undergo solution processing. Substituents having 20 carbons or more may be used, and 3-20 carbons is a preferred range. Materials with asymmetric structures may have better solution processibility than those having symmetric structures, because asymmetric materials may have a lower tendency to recrystallize. Dendrimer substituents may be used to enhance the ability of small molecules to undergo solution processing.

Devices fabricated in accordance with embodiments of the present invention may further optionally comprise a barrier layer. One purpose of the barrier layer is to protect the electrodes and organic layers from damaging exposure to harmful species in the environment including moisture, vapor and/or gases, etc. The barrier layer may be deposited over, under or next to a substrate, an electrode, or over any other parts of a device including an edge. The barrier layer may comprise a single layer, or multiple layers. The barrier layer may be formed by various known chemical vapor deposition techniques and may include compositions having a single phase as well as compositions having multiple phases. Any suitable material or combination of materials may be used for the barrier layer. The barrier layer may incorporate an inorganic or an organic compound or both. The preferred barrier layer comprises a mixture of a polymeric material and a non-polymeric material as described in U.S. Pat. No. 7,968,146, PCT Pat. Application Nos. PCT/US2007/023098 and PCT/US2009/042829, which are herein incorporated by reference in their entireties. To be considered a “mixture”, the aforesaid polymeric and non-polymeric materials comprising the barrier layer should be deposited under the same reaction conditions and/or at the same time. The weight ratio of polymeric to non-polymeric material may be in the range of 95:5 to 5:95. The polymeric material and the non-polymeric material may be created from the same precursor material. In one example, the mixture of a polymeric material and a non-polymeric material consists essentially of polymeric silicon and inorganic silicon.

Devices fabricated in accordance with embodiments of the invention may be incorporated into a wide variety of consumer products, including flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads up displays, fully transparent displays, flexible displays, laser printers, telephones, cell phones, personal digital assistants (PDAs), laptop computers, digital cameras, camcorders, viewfinders, micro-displays, vehicles, a large area wall, theater or stadium screen, or a sign. Various control mechanisms may be used to control devices fabricated in accordance with the present invention, including passive matrix and active matrix. Many of the devices are intended for use in a temperature range comfortable to humans, such as 18 degrees C. to 30 degrees C., and more preferably at room temperature (20-25 degrees C.).

The materials and structures described herein may have applications in devices other than OLEDs. For example, other optoelectronic devices such as organic solar cells and organic photodetectors may employ the materials and structures. More generally, organic devices, such as organic transistors, may employ the materials and structures.

The terms halo, halogen, alkyl, cycloalkyl, alkenyl, alkynyl, arylkyl, heterocyclic group, aryl, aromatic group, and heteroaryl are known to the art, and are defined in U.S. Pat. No. 7,279,704 at cols. 31-32, which are incorporated herein by reference.

A compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), and having the structure:

with Formula I is provided. In the compound of Formula I, A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ comprise carbon or nitrogen, and at least one of A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ is nitrogen. Ring B is bonded to ring A through a C—C bond, the iridium is bonded to ring A through a Ir—C bond. X is O, S, or Se. R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution, and any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring. R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, and n is an integer from 1 to 3.

Heteroleptic iridium complexes with 2-phenylpyridine and 2-(4-dibenzofuran)-pyridine ligands have been previously disclosed. The dibenzofuran substitution extends the conjugation of the ligand and lowers the LUMO of the complex, resulting in a slight red shifted emission and less saturated green color. For example, Compound A has a λ_(max) of 528 nm in 2-methyl-tetrahydrofuran at room temperature, compared to around 516 nm for tris(2-phenylpyridine)iridium. The compounds of Formula I introduce an azadibenzofuran substitution, as in, for example, Compound 1, which further lowers the LUMO of the complex due to the electron deficient nature of the azadibenzofuran group. The reduction potential was measured at −2.55 V versus −2.60 V for Compound A. Based on these results, it was expected that the emission of Compound 1 will be further red shifted. Surprisingly, the PL of compounds of Formula I such as Compound 1, measured under the same condition as Compound A, showed λ_(max) of 523 nm, which is 5 nm blue shifted compared to Compound A. Similarly, the □_(max) of Compound 4 is 524 nm which is 4 nm blue shifted compared to Compound A. The results are summarized in Table 1. Thus, compounds of Formula I unexpectedly have blue shifted emission spectra, which makes compounds of Formula I more suitable for use as a saturated green color in display applications.

TABLE 1 Redox Potential PL in Compound Structure vs. Fc/Fc⁺ 2-methyl-THF Ir(PPy)₃

E_(Red): −2.70 V E_(Ox): 0.31 V R.T.: 516 nm 77K: 493 nm Compound A

E_(Red): −2.60 V E_(Ox): 0.35 V R.T.: 528 nm 77K: 512 nm Compound 1

E_(Red): −2.55 V E_(Ox): 0.40 V R.T.: 523 nm 77K: 510 nm Compound 4

ERed: −2.55 V Eox: 0.37 V R.T.: 524 nm 77K: 510

In one embodiment, n is 1. In one embodiment, the compound has the formula:

In one embodiment, the compound has the formula:

In one embodiment, only one of A¹ to A⁸ is nitrogen. In one embodiment, only one of A⁵ to A⁸ is nitrogen. In one embodiment, X is O.

In one embodiment, R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, alkyl, and combinations thereof. In one embodiment, R² is alkyl.

In one embodiment, the alkyl is deuterated or partially deuterated. In one embodiment, R³ is alkyl.

In one embodiment, the alkyl is deuterated or partially deuterated.

In one embodiment, L_(A) is selected from the group consisting of:

In one embodiment, L_(A) is selected from the group consisting of:

In one embodiment, L_(B) is selected from the group consisting of:

In one embodiment, the compound of formula Ir(L_(A))(L_(B))₂ has the formula:

Compound Number L_(A) L_(B) 1. L_(A1) L_(B1) 2. L_(A2) L_(B1) 3. L_(A3) L_(B1) 4. L_(A4) L_(B1) 5. L_(A5) L_(B1) 6. L_(A6) L_(B1) 7. L_(A7) L_(B1) 8. L_(A8) L_(B1) 9. L_(A9) L_(B1) 10. L_(A10) L_(B1) 11. L_(A11) L_(B1) 12. L_(A12) L_(B1) 13. L_(A13) L_(B1) 14. L_(A14) L_(B1) 15. L_(A15) L_(B1) 16. L_(A16) L_(B1) 17. L_(A17) L_(B1) 18. L_(A18) L_(B1) 19. L_(A19) L_(B1) 20. L_(A10) L_(B1) 21. L_(A21) L_(B1) 22. L_(A22) L_(B1) 23. L_(A23) L_(B1) 24. L_(A24) L_(B1) 25. L_(A25) L_(B1) 26. L_(A26) L_(B1) 27. L_(A27) L_(B1) 28. L_(A28) L_(B1) 29. L_(A29) L_(B1) 30. L_(A30) L_(B1) 31. L_(A31) L_(B1) 32. L_(A32) L_(B1) 33. L_(A33) L_(B1) 34. L_(A34) L_(B1) 35. L_(A35) L_(B1) 36. L_(A36) L_(B1) 37. L_(A37) L_(B1) 38. L_(A38) L_(B1) 39. L_(A39) L_(B1) 40. L_(A40) L_(B1) 41. L_(A41) L_(B1) 42. L_(A42) L_(B1) 43. L_(A43) L_(B1) 44. L_(A44) L_(B1) 45. L_(A45) L_(B1) 46. L_(A46) L_(B1) 47. L_(A47) L_(B1) 48. L_(A48) L_(B1) 49. L_(A49) L_(B1) 50. L_(A50) L_(B1) 51. L_(A51) L_(B1) 52. L_(A52) L_(B1) 53. L_(A53) L_(B1) 54. L_(A54) L_(B1) 55. L_(A55) L_(B1) 56. L_(A56) L_(B1) 57. L_(A57) L_(B1) 58. L_(A58) L_(B1) 59. L_(A59) L_(B1) 60. L_(A60) L_(B1) 61. L_(A61) L_(B1) 62. L_(A62) L_(B1) 63. L_(A63) L_(B1) 64. L_(A64) L_(B1) 65. L_(A65) L_(B1) 66. L_(A66) L_(B1) 67. L_(A67) L_(B1) 68. L_(A68) L_(B1) 69. L_(A69) L_(B1) 70. L_(A70) L_(B1) 71. L_(A71) L_(B1) 72. L_(A72) L_(B1) 73. L_(A73) L_(B1) 74. L_(A74) L_(B1) 75. L_(A75) L_(B1) 76. L_(A76) L_(B1) 77. L_(A77) L_(B1) 78. L_(A78) L_(B1) 79. L_(A79) L_(B1) 80. L_(A80) L_(B1) 81. L_(A81) L_(B1) 82. L_(A82) L_(B1) 83. L_(A83) L_(B1) 84. L_(A84) L_(B1) 85. L_(A85) L_(B1) 86. L_(A86) L_(B1) 87. L_(A87) L_(B1) 88. L_(A88) L_(B1) 89. L_(A89) L_(B1) 90. L_(A90) L_(B1) 91. L_(A91) L_(B1) 92. L_(A92) L_(B1) 93. L_(A93) L_(B1) 94. L_(A94) L_(B1) 95. L_(A95) L_(B1) 96. L_(A96) L_(B1) 97. L_(A97) L_(B1) 98. L_(A98) L_(B1) 99. L_(A99) L_(B1) 100. L_(A100) L_(B1) 101. L_(A101) L_(B1) 102. L_(A102) L_(B1) 103. L_(A103) L_(B1) 104. L_(A104) L_(B1) 105. L_(A105) L_(B1) 106. L_(A106) L_(B1) 107. L_(A107) L_(B1) 108. L_(A108) L_(B1) 109. L_(A109) L_(B1) 110. L_(A110) L_(B1) 111. L_(A111) L_(B1) 112. L_(A112) L_(B1) 113. L_(A113) L_(B1) 114. L_(A114) L_(B1) 115. L_(A115) L_(B1) 116. L_(A116) L_(B1) 117. L_(A117) L_(B1) 118. L_(A118) L_(B1) 119. L_(A119) L_(B1) 120. L_(A1) L_(B2) 121. L_(A2) L_(B2) 122. L_(A3) L_(B2) 123. L_(A4) L_(B2) 124. L_(A5) L_(B2) 125. L_(A6) L_(B2) 126. L_(A7) L_(B2) 127. L_(A8) L_(B2) 128. L_(A9) L_(B2) 129. L_(A10) L_(B2) 130. L_(A11) L_(B2) 131. L_(A12) L_(B2) 132. L_(A13) L_(B2) 133. L_(A14) L_(B2) 134. L_(A15) L_(B2) 135. L_(A16) L_(B2) 136. L_(A17) L_(B2) 137. L_(A18) L_(B2) 138. L_(A19) L_(B2) 139. L_(A10) L_(B2) 140. L_(A21) L_(B2) 141. L_(A22) L_(B2) 142. L_(A23) L_(B2) 143. L_(A24) L_(B2) 144. L_(A25) L_(B2) 145. L_(A26) L_(B2) 146. L_(A27) L_(B2) 147. L_(A28) L_(B2) 148. L_(A29) L_(B2) 149. L_(A30) L_(B2) 150. L_(A31) L_(B2) 151. L_(A32) L_(B2) 152. L_(A33) L_(B2) 153. L_(A34) L_(B2) 154. L_(A35) L_(B2) 155. L_(A36) L_(B2) 156. L_(A37) L_(B2) 157. L_(A38) L_(B2) 158. L_(A39) L_(B2) 159. L_(A40) L_(B2) 160. L_(A41) L_(B2) 161. L_(A42) L_(B2) 162. L_(A43) L_(B2) 163. L_(A44) L_(B2) 164. L_(A45) L_(B2) 165. L_(A46) L_(B2) 166. L_(A47) L_(B2) 167. L_(A48) L_(B2) 168. L_(A49) L_(B2) 169. L_(A50) L_(B2) 170. L_(A51) L_(B2) 171. L_(A52) L_(B2) 172. L_(A53) L_(B2) 173. L_(A54) L_(B2) 174. L_(A55) L_(B2) 175. L_(A56) L_(B2) 176. L_(A57) L_(B2) 177. L_(A58) L_(B2) 178. L_(A59) L_(B2) 179. L_(A60) L_(B2) 180. L_(A61) L_(B2) 181. L_(A62) L_(B2) 182. L_(A63) L_(B2) 183. L_(A64) L_(B2) 184. L_(A65) L_(B2) 185. L_(A66) L_(B2) 186. L_(A67) L_(B2) 187. L_(A68) L_(B2) 188. L_(A69) L_(B2) 189. L_(A70) L_(B2) 190. L_(A71) L_(B2) 191. L_(A72) L_(B2) 192. L_(A73) L_(B2) 193. L_(A74) L_(B2) 194. L_(A75) L_(B2) 195. L_(A76) L_(B2) 196. L_(A77) L_(B2) 197. L_(A78) L_(B2) 198. L_(A79) L_(B2) 199. L_(A80) L_(B2) 200. L_(A81) L_(B2) 201. L_(A82) L_(B2) 202. L_(A83) L_(B2) 203. L_(A84) L_(B2) 204. L_(A85) L_(B2) 205. L_(A86) L_(B2) 206. L_(A87) L_(B2) 207. L_(A88) L_(B2) 208. L_(A89) L_(B2) 209. L_(A90) L_(B2) 210. L_(A91) L_(B2) 211. L_(A92) L_(B2) 212. L_(A93) L_(B2) 213. L_(A94) L_(B2) 214. L_(A95) L_(B2) 215. L_(A96) L_(B2) 216. L_(A97) L_(B2) 217. L_(A98) L_(B2) 218. L_(A99) L_(B2) 219. L_(A100) L_(B2) 220. L_(A101) L_(B2) 221. L_(A102) L_(B2) 222. L_(A103) L_(B2) 223. L_(A104) L_(B2) 224. L_(A105) L_(B2) 225. L_(A106) L_(B2) 226. L_(A107) L_(B2) 227. L_(A108) L_(B2) 228. L_(A109) L_(B2) 229. L_(A110) L_(B2) 230. L_(A111) L_(B2) 231. L_(A112) L_(B2) 232. L_(A113) L_(B2) 233. L_(A114) L_(B2) 234. L_(A115) L_(B2) 235. L_(A116) L_(B2) 236. L_(A117) L_(B2) 237. L_(A118) L_(B2) 238. L_(A119) L_(B2) 239. L_(A1) L_(B3) 240. L_(A2) L_(B3) 241. L_(A3) L_(B3) 242. L_(A4) L_(B3) 243. L_(A5) L_(B3) 244. L_(A6) L_(B3) 245. L_(A7) L_(B3) 246. L_(A8) L_(B3) 247. L_(A9) L_(B3) 248. L_(A10) L_(B3) 249. L_(A11) L_(B3) 250. L_(A12) L_(B3) 251. L_(A13) L_(B3) 252. L_(A14) L_(B3) 253. L_(A15) L_(B3) 254. L_(A16) L_(B3) 255. L_(A17) L_(B3) 256. L_(A18) L_(B3) 257. L_(A19) L_(B3) 258. L_(A10) L_(B3) 259. L_(A21) L_(B3) 260. L_(A22) L_(B3) 261. L_(A23) L_(B3) 262. L_(A24) L_(B3) 263. L_(A25) L_(B3) 264. L_(A26) L_(B3) 265. L_(A27) L_(B3) 266. L_(A28) L_(B3) 267. L_(A29) L_(B3) 268. L_(A30) L_(B3) 269. L_(A31) L_(B3) 270. L_(A32) L_(B3) 271. L_(A33) L_(B3) 272. L_(A34) L_(B3) 273. L_(A35) L_(B3) 274. L_(A36) L_(B3) 275. L_(A37) L_(B3) 276. L_(A38) L_(B3) 277. L_(A39) L_(B3) 278. L_(A40) L_(B3) 279. L_(A41) L_(B3) 280. L_(A42) L_(B3) 281. L_(A43) L_(B3) 282. L_(A44) L_(B3) 283. L_(A45) L_(B3) 284. L_(A46) L_(B3) 285. L_(A47) L_(B3) 286. L_(A48) L_(B3) 287. L_(A49) L_(B3) 288. L_(A50) L_(B3) 289. L_(A51) L_(B3) 290. L_(A52) L_(B3) 291. L_(A53) L_(B3) 292. L_(A54) L_(B3) 293. L_(A55) L_(B3) 294. L_(A56) L_(B3) 295. L_(A57) L_(B3) 296. L_(A58) L_(B3) 297. L_(A59) L_(B3) 298. L_(A60) L_(B3) 299. L_(A61) L_(B3) 300. L_(A62) L_(B3) 301. L_(A63) L_(B3) 302. L_(A64) L_(B3) 303. L_(A65) L_(B3) 304. L_(A66) L_(B3) 305. L_(A67) L_(B3) 306. L_(A68) L_(B3) 307. L_(A69) L_(B3) 308. L_(A70) L_(B3) 309. L_(A71) L_(B3) 310. L_(A72) L_(B3) 311. L_(A73) L_(B3) 312. L_(A74) L_(B3) 313. L_(A75) L_(B3) 314. L_(A76) L_(B3) 315. L_(A77) L_(B3) 316. L_(A78) L_(B3) 317. L_(A79) L_(B3) 318. L_(A80) L_(B3) 319. L_(A81) L_(B3) 320. L_(A82) L_(B3) 321. L_(A83) L_(B3) 322. L_(A84) L_(B3) 323. L_(A85) L_(B3) 324. L_(A86) L_(B3) 325. L_(A87) L_(B3) 326. L_(A88) L_(B3) 327. L_(A89) L_(B3) 328. L_(A90) L_(B3) 329. L_(A91) L_(B3) 330. L_(A92) L_(B3) 331. L_(A93) L_(B3) 332. L_(A94) L_(B3) 333. L_(A95) L_(B3) 334. L_(A96) L_(B3) 335. L_(A97) L_(B3) 336. L_(A98) L_(B3) 337. L_(A99) L_(B3) 338. L_(A100) L_(B3) 339. L_(A101) L_(B3) 340. L_(A102) L_(B3) 341. L_(A103) L_(B3) 342. L_(A104) L_(B3) 343. L_(A105) L_(B3) 344. L_(A106) L_(B3) 345. L_(A107) L_(B3) 346. L_(A108) L_(B3) 347. L_(A109) L_(B3) 348. L_(A110) L_(B3) 349. L_(A111) L_(B3) 350. L_(A112) L_(B3) 351. L_(A113) L_(B3) 352. L_(A114) L_(B3) 353. L_(A115) L_(B3) 354. L_(A116) L_(B3) 355. L_(A117) L_(B3) 356. L_(A118) L_(B3) 357. L_(A119) L_(B3) 358. L_(A1) L_(B4) 359. L_(A2) L_(B4) 360. L_(A3) L_(B4) 361. L_(A4) L_(B4) 362. L_(A5) L_(B4) 363. L_(A6) L_(B4) 364. L_(A7) L_(B4) 365. L_(A8) L_(B4) 366. L_(A9) L_(B4) 367. L_(A10) L_(B4) 368. L_(A11) L_(B4) 369. L_(A12) L_(B4) 370. L_(A13) L_(B4) 371. L_(A14) L_(B4) 372. L_(A15) L_(B4) 373. L_(A16) L_(B4) 374. L_(A17) L_(B4) 375. L_(A18) L_(B4) 376. L_(A19) L_(B4) 377. L_(A10) L_(B4) 378. L_(A21) L_(B4) 379. L_(A22) L_(B4) 380. L_(A23) L_(B4) 381. L_(A24) L_(B4) 382. L_(A25) L_(B4) 383. L_(A26) L_(B4) 384. L_(A27) L_(B4) 385. L_(A28) L_(B4) 386. L_(A29) L_(B4) 387. L_(A30) L_(B4) 388. L_(A31) L_(B4) 389. L_(A32) L_(B4) 390. L_(A33) L_(B4) 391. L_(A34) L_(B4) 392. L_(A35) L_(B4) 393. L_(A36) L_(B4) 394. L_(A37) L_(B4) 395. L_(A38) L_(B4) 396. L_(A39) L_(B4) 397. L_(A40) L_(B4) 398. L_(A41) L_(B4) 399. L_(A42) L_(B4) 400. L_(A43) L_(B4) 401. L_(A44) L_(B4) 402. L_(A45) L_(B4) 403. L_(A46) L_(B4) 404. L_(A47) L_(B4) 405. L_(A48) L_(B4) 406. L_(A49) L_(B4) 407. L_(A50) L_(B4) 408. L_(A51) L_(B4) 409. L_(A52) L_(B4) 410. L_(A53) L_(B4) 411. L_(A54) L_(B4) 412. L_(A55) L_(B4) 413. L_(A56) L_(B4) 414. L_(A57) L_(B4) 415. L_(A58) L_(B4) 416. L_(A59) L_(B4) 417. L_(A60) L_(B4) 418. L_(A61) L_(B4) 419. L_(A62) L_(B4) 420. L_(A63) L_(B4) 421. L_(A64) L_(B4) 422. L_(A65) L_(B4) 423. L_(A66) L_(B4) 424. L_(A67) L_(B4) 425. L_(A68) L_(B4) 426. L_(A69) L_(B4) 427. L_(A70) L_(B4) 428. L_(A71) L_(B4) 429. L_(A72) L_(B4) 430. L_(A73) L_(B4) 431. L_(A74) L_(B4) 432. L_(A75) L_(B4) 433. L_(A76) L_(B4) 434. L_(A77) L_(B4) 435. L_(A78) L_(B4) 436. L_(A79) L_(B4) 437. L_(A80) L_(B4) 438. L_(A81) L_(B4) 439. L_(A82) L_(B4) 440. L_(A83) L_(B4) 441. L_(A84) L_(B4) 442. L_(A85) L_(B4) 443. L_(A86) L_(B4) 444. L_(A87) L_(B4) 445. L_(A88) L_(B4) 446. L_(A89) L_(B4) 447. L_(A90) L_(B4) 448. L_(A91) L_(B4) 449. L_(A92) L_(B4) 450. L_(A93) L_(B4) 451. L_(A94) L_(B4) 452. L_(A95) L_(B4) 453. L_(A96) L_(B4) 454. L_(A97) L_(B4) 455. L_(A98) L_(B4) 456. L_(A99) L_(B4) 457. L_(A100) L_(B4) 458. L_(A101) L_(B4) 459. L_(A102) L_(B4) 460. L_(A103) L_(B4) 461. L_(A104) L_(B4) 462. L_(A105) L_(B4) 463. L_(A106) L_(B4) 464. L_(A107) L_(B4) 465. L_(A108) L_(B4) 466. L_(A109) L_(B4) 467. L_(A110) L_(B4) 468. L_(A111) L_(B4) 469. L_(A112) L_(B4) 470. L_(A113) L_(B4) 471. L_(A114) L_(B4) 472. L_(A115) L_(B4) 473. L_(A116) L_(B4) 474. L_(A117) L_(B4) 475. L_(A118) L_(B4) 476. L_(A119) L_(B4) 477. L_(A1) L_(B5) 478. L_(A2) L_(B5) 479. L_(A3) L_(B5) 480. L_(A4) L_(B5) 481. L_(A5) L_(B5) 482. L_(A6) L_(B5) 483. L_(A7) L_(B5) 484. L_(A8) L_(B5) 485. L_(A9) L_(B5) 486. L_(A10) L_(B5) 487. L_(A11) L_(B5) 488. L_(A12) L_(B5) 489. L_(A13) L_(B5) 490. L_(A14) L_(B5) 491. L_(A15) L_(B5) 492. L_(A16) L_(B5) 493. L_(A17) L_(B5) 494. L_(A18) L_(B5) 495. L_(A19) L_(B5) 496. L_(A10) L_(B5) 497. L_(A21) L_(B5) 498. L_(A22) L_(B5) 499. L_(A23) L_(B5) 500. L_(A24) L_(B5) 501. L_(A25) L_(B5) 502. L_(A26) L_(B5) 503. L_(A27) L_(B5) 504. L_(A28) L_(B5) 505. L_(A29) L_(B5) 506. L_(A30) L_(B5) 507. L_(A31) L_(B5) 508. L_(A32) L_(B5) 509. L_(A33) L_(B5) 510. L_(A34) L_(B5) 511. L_(A35) L_(B5) 512. L_(A36) L_(B5) 513. L_(A37) L_(B5) 514. L_(A38) L_(B5) 515. L_(A39) L_(B5) 516. L_(A40) L_(B5) 517. L_(A41) L_(B5) 518. L_(A42) L_(B5) 519. L_(A43) L_(B5) 520. L_(A44) L_(B5) 521. L_(A45) L_(B5) 522. L_(A46) L_(B5) 523. L_(A47) L_(B5) 524. L_(A48) L_(B5) 525. L_(A49) L_(B5) 526. L_(A50) L_(B5) 527. L_(A51) L_(B5) 528. L_(A52) L_(B5) 529. L_(A53) L_(B5) 530. L_(A54) L_(B5) 531. L_(A55) L_(B5) 532. L_(A56) L_(B5) 533. L_(A57) L_(B5) 534. L_(A58) L_(B5) 535. L_(A59) L_(B5) 536. L_(A60) L_(B5) 537. L_(A61) L_(B5) 538. L_(A62) L_(B5) 539. L_(A63) L_(B5) 540. L_(A64) L_(B5) 541. L_(A65) L_(B5) 542. L_(A66) L_(B5) 543. L_(A67) L_(B5) 544. L_(A68) L_(B5) 545. L_(A69) L_(B5) 546. L_(A70) L_(B5) 547. L_(A71) L_(B5) 548. L_(A72) L_(B5) 549. L_(A73) L_(B5) 550. L_(A74) L_(B5) 551. L_(A75) L_(B5) 552. L_(A76) L_(B5) 553. L_(A77) L_(B5) 554. L_(A78) L_(B5) 555. L_(A79) L_(B5) 556. L_(A80) L_(B5) 557. L_(A81) L_(B5) 558. L_(A82) L_(B5) 559. L_(A83) L_(B5) 560. L_(A84) L_(B5) 561. L_(A85) L_(B5) 562. L_(A86) L_(B5) 563. L_(A87) L_(B5) 564. L_(A88) L_(B5) 565. L_(A89) L_(B5) 566. L_(A90) L_(B5) 567. L_(A91) L_(B5) 568. L_(A92) L_(B5) 569. L_(A93) L_(B5) 570. L_(A94) L_(B5) 571. L_(A95) L_(B5) 572. L_(A96) L_(B5) 573. L_(A97) L_(B5) 574. L_(A98) L_(B5) 575. L_(A99) L_(B5) 576. L_(A100) L_(B5) 577. L_(A101) L_(B5) 578. L_(A102) L_(B5) 579. L_(A103) L_(B5) 580. L_(A104) L_(B5) 581. L_(A105) L_(B5) 582. L_(A106) L_(B5) 583. L_(A107) L_(B5) 584. L_(A108) L_(B5) 585. L_(A109) L_(B5) 586. L_(A110) L_(B5) 587. L_(A111) L_(B5) 588. L_(A112) L_(B5) 589. L_(A113) L_(B5) 590. L_(A114) L_(B5) 591. L_(A115) L_(B5) 592. L_(A116) L_(B5) 593. L_(A117) L_(B5) 594. L_(A118) L_(B5) 595. L_(A119) L_(B5) 596. L_(A1) L_(B6) 597. L_(A2) L_(B6) 598. L_(A3) L_(B6) 599. L_(A4) L_(B6) 600. L_(A5) L_(B6) 601. L_(A6) L_(B6) 602. L_(A7) L_(B6) 603. L_(A8) L_(B6) 604. L_(A9) L_(B6) 605. L_(A10) L_(B6) 606. L_(A11) L_(B6) 607. L_(A12) L_(B6) 608. L_(A13) L_(B6) 609. L_(A14) L_(B6) 610. L_(A15) L_(B6) 611. L_(A16) L_(B6) 612. L_(A17) L_(B6) 613. L_(A18) L_(B6) 614. L_(A19) L_(B6) 615. L_(A10) L_(B6) 616. L_(A21) L_(B6) 617. L_(A22) L_(B6) 618. L_(A23) L_(B6) 619. L_(A24) L_(B6) 620. L_(A25) L_(B6) 621. L_(A26) L_(B6) 622. L_(A27) L_(B6) 623. L_(A28) L_(B6) 624. L_(A29) L_(B6) 625. L_(A30) L_(B6) 626. L_(A31) L_(B6) 627. L_(A32) L_(B6) 628. L_(A33) L_(B6) 629. L_(A34) L_(B6) 630. L_(A35) L_(B6) 631. L_(A36) L_(B6) 632. L_(A37) L_(B6) 633. L_(A38) L_(B6) 634. L_(A39) L_(B6) 635. L_(A40) L_(B6) 636. L_(A41) L_(B6) 637. L_(A42) L_(B6) 638. L_(A43) L_(B6) 639. L_(A44) L_(B6) 640. L_(A45) L_(B6) 641. L_(A46) L_(B6) 642. L_(A47) L_(B6) 643. L_(A48) L_(B6) 644. L_(A49) L_(B6) 645. L_(A50) L_(B6) 646. L_(A51) L_(B6) 647. L_(A52) L_(B6) 648. L_(A53) L_(B6) 649. 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L_(A107) L_(B10) 1179. L_(A108) L_(B10) 1180. L_(A109) L_(B10) 1181. L_(A110) L_(B10) 1182. L_(A111) L_(B10) 1183. L_(A112) L_(B10) 1184. L_(A113) L_(B10) 1185. L_(A114) L_(B10) 1186. L_(A115) L_(B10) 1187. L_(A116) L_(B10) 1188. L_(A117) L_(B10) 1189. L_(A118) L_(B10) 1190. L_(A119) L_(B10) 1191. L_(A1) L_(B11) 1192. L_(A2) L_(B11) 1193. L_(A3) L_(B11) 1194. L_(A4) L_(B11) 1195. L_(A5) L_(B11) 1196. L_(A6) L_(B11) 1197. L_(A7) L_(B11) 1198. L_(A8) L_(B11) 1199. L_(A9) L_(B11) 1200. L_(A1) L_(B11) 1201. L_(A11) L_(B11) 1202. L_(A12) L_(B11) 1203. L_(A13) L_(B11) 1204. L_(A14) L_(B11) 1205. L_(A15) L_(B11) 1206. L_(A16) L_(B11) 1207. L_(A17) L_(B11) 1208. L_(A18) L_(B11) 1209. L_(A19) L_(B11) 1210. L_(A1) L_(B11) 1211. L_(A21) L_(B11) 1212. L_(A22) L_(B11) 1213. L_(A23) L_(B11) 1214. L_(A24) L_(B11) 1215. L_(A25) L_(B11) 1216. L_(A26) L_(B11) 1217. L_(A27) L_(B11) 1218. L_(A28) L_(B11) 1219. L_(A29) L_(B11) 1220. L_(A30) L_(B11) 1221. L_(A31) L_(B11) 1222. L_(A32) L_(B11) 1223. L_(A33) L_(B11) 1224. L_(A34) L_(B11) 1225. L_(A35) L_(B11) 1226. L_(A36) L_(B11) 1227. L_(A37) L_(B11) 1228. L_(A38) L_(B11) 1229. L_(A39) L_(B11) 1230. L_(A40) L_(B11) 1231. L_(A41) L_(B11) 1232. L_(A42) L_(B11) 1233. L_(A43) L_(B11) 1234. L_(A44) L_(B11) 1235. L_(A45) L_(B11) 1236. L_(A46) L_(B11) 1237. L_(A47) L_(B11) 1238. L_(A48) L_(B11) 1239. L_(A49) L_(B11) 1240. L_(A50) L_(B11) 1241. L_(A51) L_(B11) 1242. L_(A52) L_(B11) 1243. L_(A53) L_(B11) 1244. L_(A54) L_(B11) 1245. L_(A55) L_(B11) 1246. L_(A56) L_(B11) 1247. L_(A57) L_(B11) 1248. L_(A58) L_(B11) 1249. L_(A59) L_(B11) 1250. L_(A60) L_(B11) 1251. L_(A61) L_(B11) 1252. L_(A62) L_(B11) 1253. L_(A63) L_(B11) 1254. L_(A64) L_(B11) 1255. L_(A65) L_(B11) 1256. L_(A66) L_(B11) 1257. L_(A67) L_(B11) 1258. L_(A68) L_(B11) 1259. L_(A69) L_(B11) 1260. L_(A70) L_(B11) 1261. L_(A71) L_(B11) 1262. L_(A72) L_(B11) 1263. L_(A73) L_(B11) 1264. L_(A74) L_(B11) 1265. L_(A75) L_(B11) 1266. L_(A76) L_(B11) 1267. L_(A77) L_(B11) 1268. L_(A78) L_(B11) 1269. L_(A79) L_(B11) 1270. L_(A80) L_(B11) 1271. L_(A81) L_(B11) 1272. L_(A82) L_(B11) 1273. L_(A83) L_(B11) 1274. L_(A84) L_(B11) 1275. L_(A85) L_(B11) 1276. L_(A86) L_(B11) 1277. L_(A87) L_(B11) 1278. L_(A88) L_(B11) 1279. L_(A89) L_(B11) 1280. L_(A90) L_(B11) 1281. L_(A91) L_(B11) 1282. L_(A92) L_(B11) 1283. L_(A93) L_(B11) 1284. L_(A94) L_(B11) 1285. L_(A95) L_(B11) 1286. L_(A96) L_(B11) 1287. L_(A97) L_(B11) 1288. L_(A98) L_(B11) 1289. L_(A99) L_(B11) 1290. L_(A100) L_(B11) 1291. L_(A101) L_(B11) 1292. L_(A102) L_(B11) 1293. L_(A103) L_(B11) 1294. L_(A104) L_(B11) 1295. L_(A105) L_(B11) 1296. L_(A106) L_(B11) 1297. L_(A107) L_(B11) 1298. L_(A108) L_(B11) 1299. L_(A109) L_(B11) 1300. L_(A110) L_(B11) 1301. L_(A111) L_(B11) 1302. L_(A112) L_(B11) 1303. L_(A113) L_(B11) 1304. L_(A114) L_(B11) 1305. L_(A115) L_(B11) 1306. L_(A116) L_(B11) 1307. L_(A117) L_(B11) 1308. L_(A118) L_(B11) 1309. L_(A119) L_(B11) 1310. L_(A1) L_(B12) 1311. L_(A2) L_(B12) 1312. L_(A3) L_(B12) 1313. L_(A4) L_(B12) 1314. L_(A5) L_(B12) 1315. L_(A6) L_(B12) 1316. L_(A7) L_(B12) 1317. L_(A8) L_(B12) 1318. L_(A9) L_(B12) 1319. L_(A10) L_(B12) 1320. L_(A11) L_(B12) 1321. L_(A12) L_(B12) 1322. L_(A13) L_(B12) 1323. L_(A14) L_(B12) 1324. L_(A15) L_(B12) 1325. L_(A16) L_(B12) 1326. L_(A17) L_(B12) 1327. L_(A18) L_(B12) 1328. L_(A19) L_(B12) 1329. L_(A10) L_(B12) 1330. L_(A21) L_(B12) 1331. L_(A22) L_(B12) 1332. L_(A23) L_(B12) 1333. L_(A24) L_(B12) 1334. L_(A25) L_(B12) 1335. L_(A26) L_(B12) 1336. L_(A27) L_(B12) 1337. L_(A28) L_(B12) 1338. L_(A29) L_(B12) 1339. L_(A30) L_(B12) 1340. L_(A31) L_(B12) 1341. L_(A32) L_(B12) 1342. L_(A33) L_(B12) 1343. L_(A34) L_(B12) 1344. L_(A35) L_(B12) 1345. L_(A36) L_(B12) 1346. L_(A37) L_(B12) 1347. L_(A38) L_(B12) 1348. L_(A39) L_(B12) 1349. L_(A40) L_(B12) 1350. L_(A41) L_(B12) 1351. L_(A42) L_(B12) 1352. L_(A43) L_(B12) 1353. L_(A44) L_(B12) 1354. L_(A45) L_(B12) 1355. L_(A46) L_(B12) 1356. L_(A47) L_(B12) 1357. L_(A48) L_(B12) 1358. L_(A49) L_(B12) 1359. L_(A50) L_(B12) 1360. L_(A51) L_(B12) 1361. L_(A52) L_(B12) 1362. L_(A53) L_(B12) 1363. L_(A54) L_(B12) 1364. L_(A55) L_(B12) 1365. L_(A56) L_(B12) 1366. L_(A57) L_(B12) 1367. L_(A58) L_(B12) 1368. L_(A59) L_(B12) 1369. L_(A60) L_(B12) 1370. L_(A61) L_(B12) 1371. L_(A62) L_(B12) 1372. L_(A63) L_(B12) 1373. L_(A64) L_(B12) 1374. L_(A65) L_(B12) 1375. L_(A66) L_(B12) 1376. L_(A67) L_(B12) 1377. L_(A68) L_(B12) 1378. L_(A69) L_(B12) 1379. L_(A70) L_(B12) 1380. L_(A71) L_(B12) 1381. L_(A72) L_(B12) 1382. L_(A73) L_(B12) 1383. L_(A74) L_(B12) 1384. L_(A75) L_(B12) 1385. L_(A76) L_(B12) 1386. L_(A77) L_(B12) 1387. L_(A78) L_(B12) 1388. L_(A79) L_(B12) 1389. L_(A80) L_(B12) 1390. L_(A81) L_(B12) 1391. L_(A82) L_(B12) 1392. L_(A83) L_(B12) 1393. L_(A84) L_(B12) 1394. L_(A85) L_(B12) 1395. L_(A86) L_(B12) 1396. L_(A87) L_(B12) 1397. L_(A88) L_(B12) 1398. L_(A89) L_(B12) 1399. L_(A90) L_(B12) 1400. L_(A91) L_(B12) 1401. L_(A92) L_(B12) 1402. L_(A93) L_(B12) 1403. L_(A94) L_(B12) 1404. L_(A95) L_(B12) 1405. L_(A96) L_(B12) 1406. L_(A97) L_(B12) 1407. L_(A98) L_(B12) 1408. L_(A99) L_(B12) 1409. L_(A100) L_(B12) 1410. L_(A101) L_(B12) 1411. L_(A102) L_(B12) 1412. L_(A103) L_(B12) 1413. L_(A104) L_(B12) 1414. L_(A105) L_(B12) 1415. L_(A106) L_(B12) 1416. L_(A107) L_(B12) 1417. L_(A108) L_(B12) 1418. L_(A109) L_(B12) 1419. L_(A110) L_(B12) 1420. L_(A111) L_(B12) 1421. L_(A112) L_(B12) 1422. L_(A113) L_(B12) 1423. L_(A114) L_(B12) 1424. L_(A115) L_(B12) 1425. L_(A116) L_(B12) 1426. L_(A117) L_(B12) 1427. L_(A118) L_(B12) 1428. L_(A119) L_(B12) 1429. L_(A1) L_(B13) 1430. L_(A2) L_(B13) 1431. L_(A3) L_(B13) 1432. L_(A4) L_(B13) 1433. L_(A5) L_(B13) 1434. L_(A6) L_(B13) 1435. L_(A7) L_(B13) 1436. L_(A8) L_(B13) 1437. L_(A9) L_(B13) 1438. L_(A10) L_(B13) 1439. L_(A11) L_(B13) 1440. L_(A12) L_(B13) 1441. L_(A13) L_(B13) 1442. L_(A14) L_(B13) 1443. L_(A15) L_(B13) 1444. L_(A16) L_(B13) 1445. L_(A17) L_(B13) 1446. L_(A18) L_(B13) 1447. L_(A19) L_(B13) 1448. L_(A10) L_(B13) 1449. L_(A21) L_(B13) 1450. L_(A22) L_(B13) 1451. L_(A23) L_(B13) 1452. L_(A24) L_(B13) 1453. L_(A25) L_(B13) 1454. L_(A26) L_(B13) 1455. L_(A27) L_(B13) 1456. L_(A28) L_(B13) 1457. L_(A29) L_(B13) 1458. L_(A30) L_(B13) 1459. L_(A31) L_(B13) 1460. L_(A32) L_(B13) 1461. L_(A33) L_(B13) 1462. L_(A34) L_(B13) 1463. L_(A35) L_(B13) 1464. L_(A36) L_(B13) 1465. L_(A37) L_(B13) 1466. L_(A38) L_(B13) 1467. L_(A39) L_(B13) 1468. L_(A40) L_(B13) 1469. L_(A41) L_(B13) 1470. L_(A42) L_(B13) 1471. L_(A43) L_(B13) 1472. L_(A44) L_(B13) 1473. L_(A45) L_(B13) 1474. L_(A46) L_(B13) 1475. L_(A47) L_(B13) 1476. L_(A48) L_(B13) 1477. L_(A49) L_(B13) 1478. L_(A50) L_(B13) 1479. L_(A51) L_(B13) 1480. L_(A52) L_(B13) 1481. L_(A53) L_(B13) 1482. L_(A54) L_(B13) 1483. L_(A55) L_(B13) 1484. L_(A56) L_(B13) 1485. L_(A57) L_(B13) 1486. L_(A58) L_(B13) 1487. L_(A59) L_(B13) 1488. L_(A60) L_(B13) 1489. L_(A61) L_(B13) 1490. L_(A62) L_(B13) 1491. L_(A63) L_(B13) 1492. L_(A64) L_(B13) 1493. L_(A65) L_(B13) 1494. L_(A66) L_(B13) 1495. L_(A67) L_(B13) 1496. L_(A68) L_(B13) 1497. L_(A69) L_(B13) 1498. L_(A70) L_(B13) 1499. L_(A71) L_(B13) 1500. L_(A72) L_(B13) 1501. L_(A73) L_(B13) 1502. L_(A74) L_(B13) 1503. L_(A75) L_(B13) 1504. L_(A76) L_(B13) 1505. L_(A77) L_(B13) 1506. L_(A78) L_(B13) 1507. L_(A79) L_(B13) 1508. L_(A80) L_(B13) 1509. L_(A81) L_(B13) 1510. L_(A82) L_(B13) 1511. L_(A83) L_(B13) 1512. L_(A84) L_(B13) 1513. L_(A85) L_(B13) 1514. L_(A86) L_(B13) 1515. L_(A87) L_(B13) 1516. L_(A88) L_(B13) 1517. L_(A89) L_(B13) 1518. L_(A90) L_(B13) 1519. L_(A91) L_(B13) 1520. L_(A92) L_(B13) 1521. L_(A93) L_(B13) 1522. L_(A94) L_(B13) 1523. L_(A95) L_(B13) 1524. L_(A96) L_(B13) 1525. L_(A97) L_(B13) 1526. L_(A98) L_(B13) 1527. L_(A99) L_(B13) 1528. L_(A100) L_(B13) 1529. L_(A101) L_(B13) 1530. L_(A102) L_(B13) 1531. L_(A103) L_(B13) 1532. L_(A104) L_(B13) 1533. L_(A105) L_(B13) 1534. L_(A106) L_(B13) 1535. L_(A107) L_(B13) 1536. L_(A108) L_(B13) 1537. L_(A109) L_(B13) 1538. L_(A110) L_(B13) 1539. L_(A111) L_(B13) 1540. L_(A112) L_(B13) 1541. L_(A113) L_(B13) 1542. L_(A114) L_(B13) 1543. L_(A115) L_(B13) 1544. L_(A116) L_(B13) 1545. L_(A117) L_(B13) 1546. L_(A118) L_(B13) 1547. L_(A119) L_(B13) 1548. L_(A1) L_(B14) 1549. L_(A2) L_(B14) 1550. L_(A3) L_(B14) 1551. L_(A4) L_(B14) 1552. L_(A5) L_(B14) 1553. L_(A6) L_(B14) 1554. L_(A7) L_(B14) 1555. L_(A8) L_(B14) 1556. L_(A9) L_(B14) 1557. L_(A10) L_(B14) 1558. L_(A11) L_(B14) 1559. L_(A12) L_(B14) 1560. L_(A13) L_(B14) 1561. L_(A14) L_(B14) 1562. L_(A15) L_(B14) 1563. L_(A16) L_(B14) 1564. L_(A17) L_(B14) 1565. L_(A18) L_(B14) 1566. L_(A19) L_(B14) 1567. L_(A10) L_(B14) 1568. L_(A21) L_(B14) 1569. L_(A22) L_(B14) 1570. L_(A23) L_(B14) 1571. L_(A24) L_(B14) 1572. L_(A25) L_(B14) 1573. L_(A26) L_(B14) 1574. L_(A27) L_(B14) 1575. L_(A28) L_(B14) 1576. L_(A29) L_(B14) 1577. L_(A30) L_(B14) 1578. L_(A31) L_(B14) 1579. L_(A32) L_(B14) 1580. L_(A33) L_(B14) 1581. L_(A34) L_(B14) 1582. L_(A35) L_(B14) 1583. L_(A36) L_(B14) 1584. L_(A37) L_(B14) 1585. L_(A38) L_(B14) 1586. L_(A39) L_(B14) 1587. L_(A40) L_(B14) 1588. L_(A41) L_(B14) 1589. L_(A42) L_(B14) 1590. L_(A43) L_(B14) 1591. L_(A44) L_(B14) 1592. L_(A45) L_(B14) 1593. L_(A46) L_(B14) 1594. L_(A47) L_(B14) 1595. L_(A48) L_(B14) 1596. L_(A49) L_(B14) 1597. L_(A50) L_(B14) 1598. L_(A51) L_(B14) 1599. L_(A52) L_(B14) 1600. L_(A53) L_(B14) 1601. L_(A54) L_(B14) 1602. L_(A55) L_(B14) 1603. L_(A56) L_(B14) 1604. L_(A57) L_(B14) 1605. L_(A58) L_(B14) 1606. L_(A59) L_(B14) 1607. L_(A60) L_(B14) 1608. L_(A61) L_(B14) 1609. L_(A62) L_(B14) 1610. L_(A63) L_(B14) 1611. L_(A64) L_(B14) 1612. L_(A65) L_(B14) 1613. L_(A66) L_(B14) 1614. L_(A67) L_(B14) 1615. L_(A68) L_(B14) 1616. L_(A69) L_(B14) 1617. L_(A70) L_(B14) 1618. L_(A71) L_(B14) 1619. L_(A72) L_(B14) 1620. L_(A73) L_(B14) 1621. L_(A74) L_(B14) 1622. L_(A75) L_(B14) 1623. L_(A76) L_(B14) 1624. L_(A77) L_(B14) 1625. L_(A78) L_(B14) 1626. L_(A79) L_(B14) 1627. L_(A80) L_(B14) 1628. L_(A81) L_(B14) 1629. L_(A82) L_(B14) 1630. L_(A83) L_(B14) 1631. L_(A84) L_(B14) 1632. L_(A85) L_(B14) 1633. L_(A86) L_(B14) 1634. L_(A87) L_(B14) 1635. L_(A88) L_(B14) 1636. L_(A89) L_(B14) 1637. L_(A90) L_(B14) 1638. L_(A91) L_(B14) 1639. L_(A92) L_(B14) 1640. L_(A93) L_(B14) 1641. L_(A94) L_(B14) 1642. L_(A95) L_(B14) 1643. L_(A96) L_(B14) 1644. L_(A97) L_(B14) 1645. L_(A98) L_(B14) 1646. L_(A99) L_(B14) 1647. L_(A100) L_(B14) 1648. L_(A101) L_(B14) 1649. L_(A102) L_(B14) 1650. L_(A103) L_(B14) 1651. L_(A104) L_(B14) 1652. L_(A105) L_(B14) 1653. L_(A106) L_(B14) 1654. L_(A107) L_(B14) 1655. L_(A108) L_(B14) 1656. L_(A109) L_(B14) 1657. L_(A110) L_(B14) 1658. L_(A111) L_(B14) 1659. L_(A112) L_(B14) 1660. L_(A113) L_(B14) 1661. L_(A114) L_(B14) 1662. L_(A115) L_(B14) 1663. L_(A116) L_(B14) 1664. L_(A117) L_(B14) 1665. L_(A118) L_(B14) 1666. L_(A119) L_(B14) 1667. L_(A1) L_(B15) 1668. L_(A2) L_(B15) 1669. L_(A3) L_(B15) 1670. L_(A4) L_(B15) 1671. L_(A5) L_(B15) 1672. L_(A6) L_(B15) 1673. L_(A7) L_(B15) 1674. L_(A8) L_(B15) 1675. L_(A9) L_(B15) 1676. L_(A10) L_(B15) 1677. L_(A11) L_(B15) 1678. L_(A12) L_(B15) 1679. L_(A13) L_(B15) 1680. L_(A14) L_(B15) 1681. L_(A15) L_(B15) 1682. L_(A16) L_(B15) 1683. L_(A17) L_(B15) 1684. L_(A18) L_(B15) 1685. L_(A19) L_(B15) 1686. L_(A10) L_(B15) 1687. L_(A21) L_(B15) 1688. L_(A22) L_(B15) 1689. L_(A23) L_(B15) 1690. L_(A24) L_(B15) 1691. L_(A25) L_(B15) 1692. L_(A26) L_(B15) 1693. L_(A27) L_(B15) 1694. L_(A28) L_(B15) 1695. L_(A29) L_(B15) 1696. L_(A30) L_(B15) 1697. L_(A31) L_(B15) 1698. L_(A32) L_(B15) 1699. L_(A33) L_(B15) 1700. L_(A34) L_(B15) 1701. L_(A35) L_(B15) 1702. L_(A36) L_(B15) 1703. L_(A37) L_(B15) 1704. L_(A38) L_(B15) 1705. L_(A39) L_(B15) 1706. L_(A40) L_(B15) 1707. L_(A41) L_(B15) 1708. L_(A42) L_(B15) 1709. L_(A43) L_(B15) 1710. L_(A44) L_(B15) 1711. L_(A45) L_(B15) 1712. L_(A46) L_(B15) 1713. L_(A47) L_(B15) 1714. L_(A48) L_(B15) 1715. L_(A49) L_(B15) 1716. L_(A50) L_(B15) 1717. L_(A51) L_(B15) 1718. L_(A52) L_(B15) 1719. L_(A53) L_(B15) 1720. L_(A54) L_(B15) 1721. L_(A55) L_(B15) 1722. L_(A56) L_(B15) 1723. L_(A57) L_(B15) 1724. L_(A58) L_(B15) 1725. L_(A59) L_(B15) 1726. L_(A60) L_(B15) 1727. L_(A61) L_(B15) 1728. L_(A62) L_(B15) 1729. L_(A63) L_(B15) 1730. L_(A64) L_(B15) 1731. L_(A65) L_(B15) 1732. L_(A66) L_(B15) 1733. L_(A67) L_(B15) 1734. L_(A68) L_(B15) 1735. L_(A69) L_(B15) 1736. L_(A70) L_(B15) 1737. L_(A71) L_(B15) 1738. L_(A72) L_(B15) 1739. L_(A73) L_(B15) 1740. L_(A74) L_(B15) 1741. L_(A75) L_(B15) 1742. L_(A76) L_(B15) 1743. L_(A77) L_(B15) 1744. L_(A78) L_(B15) 1745. L_(A79) L_(B15) 1746. L_(A80) L_(B15) 1747. L_(A81) L_(B15) 1748. L_(A82) L_(B15) 1749. L_(A83) L_(B15) 1750. L_(A84) L_(B15) 1751. L_(A85) L_(B15) 1752. L_(A86) L_(B15) 1753. L_(A87) L_(B15) 1754. L_(A88) L_(B15) 1755. L_(A89) L_(B15) 1756. L_(A90) L_(B15) 1757. L_(A91) L_(B15) 1758. L_(A92) L_(B15) 1759. L_(A93) L_(B15) 1760. L_(A94) L_(B15) 1761. L_(A95) L_(B15) 1762. L_(A96) L_(B15) 1763. L_(A97) L_(B15) 1764. L_(A98) L_(B15) 1765. L_(A99) L_(B15) 1766. L_(A100) L_(B15) 1767. L_(A101) L_(B15) 1768. L_(A102) L_(B15) 1769. L_(A103) L_(B15) 1770. L_(A104) L_(B15) 1771. L_(A105) L_(B15) 1772. L_(A106) L_(B15) 1773. L_(A107) L_(B15) 1774. L_(A108) L_(B15) 1775. L_(A109) L_(B15) 1776. L_(A110) L_(B15) 1777. L_(A111) L_(B15) 1778. L_(A112) L_(B15) 1779. L_(A113) L_(B15) 1780. L_(A114) L_(B15) 1781. L_(A115) L_(B15) 1782. L_(A116) L_(B15) 1783. L_(A117) L_(B15) 1784. L_(A118) L_(B15) 1785. L_(A119) L_(B15) 1786. L_(A1) L_(B16) 1787. L_(A2) L_(B16) 1788. L_(A3) L_(B16) 1789. L_(A4) L_(B16) 1790. L_(A5) L_(B16) 1791. L_(A6) L_(B16) 1792. L_(A7) L_(B16) 1793. L_(A8) L_(B16) 1794. L_(A9) L_(B16) 1795. L_(A10) L_(B16) 1796. L_(A11) L_(B16) 1797. L_(A12) L_(B16) 1798. L_(A13) L_(B16) 1799. L_(A14) L_(B16) 1800. L_(A15) L_(B16) 1801. L_(A16) L_(B16) 1802. L_(A17) L_(B16) 1803. L_(A18) L_(B16) 1804. L_(A19) L_(B16) 1805. L_(A10) L_(B16) 1806. L_(A21) L_(B16) 1807. L_(A22) L_(B16) 1808. L_(A23) L_(B16) 1809. L_(A24) L_(B16) 1810. L_(A25) L_(B16) 1811. L_(A26) L_(B16) 1812. L_(A27) L_(B16) 1813. L_(A28) L_(B16) 1814. L_(A29) L_(B16) 1815. L_(A30) L_(B16) 1816. L_(A31) L_(B16) 1817. L_(A32) L_(B16) 1818. L_(A33) L_(B16) 1819. L_(A34) L_(B16) 1820. L_(A35) L_(B16) 1821. L_(A36) L_(B16) 1822. L_(A37) L_(B16) 1823. L_(A38) L_(B16) 1824. L_(A39) L_(B16) 1825. L_(A40) L_(B16) 1826. L_(A41) L_(B16) 1827. L_(A42) L_(B16) 1828. L_(A43) L_(B16) 1829. L_(A44) L_(B16) 1830. L_(A45) L_(B16) 1831. L_(A46) L_(B16) 1832. L_(A47) L_(B16) 1833. L_(A48) L_(B16) 1834. L_(A49) L_(B16) 1835. L_(A50) L_(B16) 1836. L_(A51) L_(B16) 1837. L_(A52) L_(B16) 1838. L_(A53) L_(B16) 1839. L_(A54) L_(B16) 1840. L_(A55) L_(B16) 1841. L_(A56) L_(B16) 1842. L_(A57) L_(B16) 1843. L_(A58) L_(B16) 1844. L_(A59) L_(B16) 1845. L_(A60) L_(B16) 1846. L_(A61) L_(B16) 1847. L_(A62) L_(B16) 1848. L_(A63) L_(B16) 1849. L_(A64) L_(B16) 1850. L_(A65) L_(B16) 1851. L_(A66) L_(B16) 1852. L_(A67) L_(B16) 1853. L_(A68) L_(B16) 1854. L_(A69) L_(B16) 1855. L_(A70) L_(B16) 1856. L_(A71) L_(B16) 1857. L_(A72) L_(B16) 1858. L_(A73) L_(B16) 1859. L_(A74) L_(B16) 1860. L_(A75) L_(B16) 1861. L_(A76) L_(B16) 1862. L_(A77) L_(B16) 1863. L_(A78) L_(B16) 1864. L_(A79) L_(B16) 1865. L_(A80) L_(B16) 1866. L_(A81) L_(B16) 1867. L_(A82) L_(B16) 1868. L_(A83) L_(B16) 1869. L_(A84) L_(B16) 1870. L_(A85) L_(B16) 1871. L_(A86) L_(B16) 1872. L_(A87) L_(B16) 1873. L_(A88) L_(B16) 1874. L_(A89) L_(B16) 1875. L_(A90) L_(B16) 1876. L_(A91) L_(B16) 1877. L_(A92) L_(B16) 1878. L_(A93) L_(B16) 1879. L_(A94) L_(B16) 1880. L_(A95) L_(B16) 1881. L_(A96) L_(B16) 1882. L_(A97) L_(B16) 1883. L_(A98) L_(B16) 1884. L_(A99) L_(B16) 1885. L_(A100) L_(B16) 1886. L_(A101) L_(B16) 1887. L_(A102) L_(B16) 1888. L_(A103) L_(B16) 1889. L_(A104) L_(B16) 1890. L_(A105) L_(B16) 1891. L_(A106) L_(B16) 1892. L_(A107) L_(B16) 1893. L_(A108) L_(B16) 1894. L_(A109) L_(B16) 1895. L_(A110) L_(B16) 1896. L_(A111) L_(B16) 1897. L_(A112) L_(B16) 1898. L_(A113) L_(B16) 1899. L_(A114) L_(B16) 1900. L_(A115) L_(B16) 1901. L_(A116) L_(B16) 1902. L_(A117) L_(B16) 1903. L_(A118) L_(B16) 1904. L_(A119) L_(B16) 1905. L_(A1) L_(B17) 1906. L_(A2) L_(B17) 1907. L_(A3) L_(B17) 1908. L_(A4) L_(B17) 1909. L_(A5) L_(B17) 1910. L_(A6) L_(B17) 1911. L_(A7) L_(B17) 1912. L_(A8) L_(B17) 1913. L_(A9) L_(B17) 1914. L_(A10) L_(B17) 1915. L_(A11) L_(B17) 1916. L_(A12) L_(B17) 1917. L_(A13) L_(B17) 1918. L_(A14) L_(B17) 1919. L_(A15) L_(B17) 1920. L_(A16) L_(B17) 1921. L_(A17) L_(B17) 1922. L_(A18) L_(B17) 1923. L_(A19) L_(B17) 1924. L_(A10) L_(B17) 1925. L_(A21) L_(B17) 1926. L_(A22) L_(B17) 1927. L_(A23) L_(B17) 1928. L_(A24) L_(B17) 1929. L_(A25) L_(B17) 1930. L_(A26) L_(B17) 1931. L_(A27) L_(B17) 1932. L_(A28) L_(B17) 1933. L_(A29) L_(B17) 1934. L_(A30) L_(B17) 1935. L_(A31) L_(B17) 1936. L_(A32) L_(B17) 1937. L_(A33) L_(B17) 1938. L_(A34) L_(B17) 1939. L_(A35) L_(B17) 1940. L_(A36) L_(B17) 1941. L_(A37) L_(B17) 1942. L_(A38) L_(B17) 1943. L_(A39) L_(B17) 1944. L_(A40) L_(B17) 1945. L_(A41) L_(B17) 1946. L_(A42) L_(B17) 1947. L_(A43) L_(B17) 1948. L_(A44) L_(B17) 1949. L_(A45) L_(B17) 1950. L_(A46) L_(B17) 1951. L_(A47) L_(B17) 1952. L_(A48) L_(B17) 1953. L_(A49) L_(B17) 1954. L_(A50) L_(B17) 1955. L_(A51) L_(B17) 1956. L_(A52) L_(B17) 1957. L_(A53) L_(B17) 1958. L_(A54) L_(B17) 1959. L_(A55) L_(B17) 1960. L_(A56) L_(B17) 1961. L_(A57) L_(B17) 1962. L_(A58) L_(B17) 1963. L_(A59) L_(B17) 1964. L_(A60) L_(B17) 1965. L_(A61) L_(B17) 1966. L_(A62) L_(B17) 1967. L_(A63) L_(B17) 1968. L_(A64) L_(B17) 1969. L_(A65) L_(B17) 1970. L_(A66) L_(B17) 1971. L_(A67) L_(B17) 1972. L_(A68) L_(B17) 1973. L_(A69) L_(B17) 1974. L_(A70) L_(B17) 1975. L_(A71) L_(B17) 1976. L_(A72) L_(B17) 1977. L_(A73) L_(B17) 1978. L_(A74) L_(B17) 1979. L_(A75) L_(B17) 1980. L_(A76) L_(B17) 1981. L_(A77) L_(B17) 1982. L_(A78) L_(B17) 1983. L_(A79) L_(B17) 1984. L_(A80) L_(B17) 1985. L_(A81) L_(B17) 1986. L_(A82) L_(B17) 1987. L_(A83) L_(B17) 1988. L_(A84) L_(B17) 1989. L_(A85) L_(B17) 1990. L_(A86) L_(B17) 1991. L_(A87) L_(B17) 1992. L_(A88) L_(B17) 1993. L_(A89) L_(B17) 1994. L_(A90) L_(B17) 1995. L_(A91) L_(B17) 1996. L_(A92) L_(B17) 1997. L_(A93) L_(B17) 1998. L_(A94) L_(B17) 1999. L_(A95) L_(B17) 2000. L_(A96) L_(B17) 2001. L_(A97) L_(B17) 2002. L_(A98) L_(B17) 2003. L_(A99) L_(B17) 2004. L_(A100) L_(B17) 2005. L_(A101) L_(B17) 2006. L_(A102) L_(B17) 2007. L_(A103) L_(B17) 2008. L_(A104) L_(B17) 2009. L_(A105) L_(B17) 2010. L_(A106) L_(B17) 2011. L_(A107) L_(B17) 2012. L_(A108) L_(B17) 2013. L_(A109) L_(B17) 2014. L_(A110) L_(B17) 2015. L_(A111) L_(B17) 2016. L_(A112) L_(B17) 2017. L_(A113) L_(B17) 2018. L_(A114) L_(B17) 2019. L_(A115) L_(B17) 2020. L_(A116) L_(B17) 2021. L_(A117) L_(B17) 2022. L_(A118) L_(B17) 2023. L_(A119) L_(B17) 2024. L_(A1) L_(B18) 2025. L_(A2) L_(B18) 2026. L_(A3) L_(B18) 2027. L_(A4) L_(B18) 2028. L_(A5) L_(B18) 2029. L_(A6) L_(B18) 2030. L_(A7) L_(B18) 2031. L_(A8) L_(B18) 2032. L_(A9) L_(B18) 2033. L_(A10) L_(B18) 2034. L_(A11) L_(B18) 2035. L_(A12) L_(B18) 2036. L_(A13) L_(B18) 2037. L_(A14) L_(B18) 2038. L_(A15) L_(B18) 2039. L_(A16) L_(B18) 2040. L_(A17) L_(B18) 2041. L_(A18) L_(B18) 2042. L_(A19) L_(B18) 2043. L_(A10) L_(B18) 2044. L_(A21) L_(B18) 2045. L_(A22) L_(B18) 2046. L_(A23) L_(B18) 2047. L_(A24) L_(B18) 2048. L_(A25) L_(B18) 2049. L_(A26) L_(B18) 2050. L_(A27) L_(B18) 2051. L_(A28) L_(B18) 2052. L_(A29) L_(B18) 2053. L_(A30) L_(B18) 2054. L_(A31) L_(B18) 2055. L_(A32) L_(B18) 2056. L_(A33) L_(B18) 2057. L_(A34) L_(B18) 2058. L_(A35) L_(B18) 2059. L_(A36) L_(B18) 2060. L_(A37) L_(B18) 2061. L_(A38) L_(B18) 2062. L_(A39) L_(B18) 2063. L_(A40) L_(B18) 2064. L_(A41) L_(B18) 2065. L_(A42) L_(B18) 2066. L_(A43) L_(B18) 2067. L_(A44) L_(B18) 2068. L_(A45) L_(B18) 2069. L_(A46) L_(B18) 2070. L_(A47) L_(B18) 2071. L_(A48) L_(B18) 2072. L_(A49) L_(B18) 2073. L_(A50) L_(B18) 2074. L_(A51) L_(B18) 2075. L_(A52) L_(B18) 2076. L_(A53) L_(B18) 2077. L_(A54) L_(B18) 2078. L_(A55) L_(B18) 2079. L_(A56) L_(B18) 2080. L_(A57) L_(B18) 2081. L_(A58) L_(B18) 2082. L_(A59) L_(B18) 2083. L_(A60) L_(B18) 2084. L_(A61) L_(B18) 2085. L_(A62) L_(B18) 2086. L_(A63) L_(B18) 2087. L_(A64) L_(B18) 2088. L_(A65) L_(B18) 2089. L_(A66) L_(B18) 2090. L_(A67) L_(B18) 2091. L_(A68) L_(B18) 2092. L_(A69) L_(B18) 2093. L_(A70) L_(B18) 2094. L_(A71) L_(B18) 2095. L_(A72) L_(B18) 2096. L_(A73) L_(B18) 2097. L_(A74) L_(B18) 2098. L_(A75) L_(B18) 2099. L_(A76) L_(B18) 2100. L_(A77) L_(B18) 2101. L_(A78) L_(B18) 2102. L_(A79) L_(B18) 2103. L_(A80) L_(B18) 2104. L_(A81) L_(B18) 2105. L_(A82) L_(B18) 2106. L_(A83) L_(B18) 2107. L_(A84) L_(B18) 2108. L_(A85) L_(B18) 2109. L_(A86) L_(B18) 2110. L_(A87) L_(B18) 2111. L_(A88) L_(B18) 2112. L_(A89) L_(B18) 2113. L_(A90) L_(B18) 2114. L_(A91) L_(B18) 2115. L_(A92) L_(B18) 2116. L_(A93) L_(B18) 2117. L_(A94) L_(B18) 2118. L_(A95) L_(B18) 2119. L_(A96) L_(B18) 2120. L_(A97) L_(B18) 2121. L_(A98) L_(B18) 2122. L_(A99) L_(B18) 2123. L_(A100) L_(B18) 2124. L_(A101) L_(B18) 2125. L_(A102) L_(B18) 2126. L_(A103) L_(B18) 2127. L_(A104) L_(B18) 2128. L_(A105) L_(B18) 2129. L_(A106) L_(B18) 2130. L_(A107) L_(B18) 2131. L_(A108) L_(B18) 2132. L_(A109) L_(B18) 2133. L_(A110) L_(B18) 2134. L_(A111) L_(B18) 2135. L_(A112) L_(B18) 2136. L_(A113) L_(B18) 2137. L_(A114) L_(B18) 2138. L_(A115) L_(B18) 2139. L_(A116) L_(B18) 2140. L_(A117) L_(B18) 2141. L_(A118) L_(B18) 2142. L_(A119) L_(B18)

In one embodiment, the compound is selected from the group consisting of:

In one embodiment, a first device is provided. The first device comprises a first organic light emitting device, further comprising, an anode, a cathode, and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), having the structure:

with Formula I is provided. In the compound of Formula I, A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ comprise carbon or nitrogen, and at least one of A¹, A², A³, A⁴, A⁵, A⁶, A⁷, and A⁸ is nitrogen. Ring B is bonded to ring A through a C—C bond, the iridium is bonded to ring A through a Ir—C bond. X is O, S, or Se. R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution, and any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring. R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, and n is an integer from 1 to 3.

In one embodiment, the first device is a consumer product.

In one embodiment, the first device is an organic light-emitting device.

In one embodiment, the first device comprises a lighting panel.

In one embodiment, the organic layer is an emissive layer and the compound is an emissive dopant.

In one embodiment, the organic layer is an emissive layer and the compound is a non-emissive dopant.

In one embodiment, the organic layer further comprises a host.

In one embodiment, the host comprises a triphenylene containing benzo-fused thiophene or benzo-fused furan, wherein any substituent in the host is an unfused substituent independently selected from the group consisting of C_(n)H_(2n+1), OC_(n)H_(2n+1), OAr₁, N(C_(n)H_(2n+1))₂, N(Ar₁)(Ar₂), CH═CH—C_(n)H_(2n+1), C≡CHC_(n)H_(2n+1), Ar₁, Ar₁—Ar₂, C_(n)H_(2n)—Ar₁, or no substitution, wherein n is from 1 to 10; and wherein Ar₁ and Ar₂ are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.

In one embodiment, the host comprises at least one chemical group selected from the group consisting of carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

The “aza” designation in the fragments described above, i.e. aza-dibenzofuran, aza-dibenzonethiophene, etc. means that one or more of the C—H groups in the respective fragment can be replaced by a nitrogen atom, for example, and without any limitation, azatriphenylene encompasses both dibenzo[f,h]quinoxaline and dibenzo[f,h]quinoline. One of ordinary skill in the art can readily envision other nitrogen analogs of the aza-derivatives described above, and all such analogs are intended to be encompassed by the terms as set forth herein.

In one embodiment, the host is selected from the group consisting of:

-   -   and combinations thereof.

In one embodiment, the host comprises a metal complex.

Device Examples

All example devices were fabricated by high vacuum (<10⁻⁷ Torr) thermal evaporation. The anode electrode is 1200 Å of indium tin oxide (ITO). The cathode consisted of 10 Å of LiF followed by 1,000 Å of Al. All devices are encapsulated with a glass lid sealed with an epoxy resin in a nitrogen glove box (<1 ppm of H₂O and O₂) immediately after fabrication, and a moisture getter was incorporated inside the package.

The organic stack of the device examples consisted of sequentially, from the ITO surface, 100 Å of Compound B as the hole injection layer (HIL), 300 Å of 4,4′-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (□-NPD) as the hole transporting layer (HTL), 300 Å of the compound of Formula I doped in with Compound C as host, with 10-15 wt % of the iridium phosphorescent compound as the emissive layer (EML), 50 Å of Compound C as a blocking layer (BL), 400 or 450 Å of Alq (tris-8-hydroxyquinoline aluminum) as the ETL. The comparative Example with Compound A was fabricated similarly to the Device Examples except that Compound A was used as the emitter in the EML.

The device results and data are summarized in Tables 2 and 3 from those devices. As used herein, NPD, Alq, and comparative Compounds A to D have the following structures:

TABLE 2 device Structures of Inventive Compound and Comparative Compound HIL HTL EML BL ETL Example (100 Å) (300 Å) (300 Å, doping %) (50 Å) (450 Å) Com- Com- NPD Com- Compound A Compound Alq parative pound pound 10% C Exam- B C ple 1 Inven- Com- NPD Com- Compound 1 Compound Alq tive pound pound 10% C Exam- B C ple 1 Com- Com- NPD Com- Compound D Compound Alq parative pound pound 10% C Exam- B C ple 2 Inven- Com- NPD Com- Compound 105 Compound Alq tive pound pound 10% C Exam- B C ple 2 Inven- Com- NPD Com- Compound 4 Compound Alq tive pound pound 10% C Exam- B C ple 3

TABLE 3 VTE Device Results At 1000 nits At 40 mA/cm² 1931 CIE λ_(max) FWHM Voltage LE EQE PE LT₈₀ Example x y (nm) (nm) (V) (Cd/A) (%) (Im/W) L₀ (nits) (h) Comparative 0.350 0.619 530 62 6.2 64.8 17.2 33   18,482 121 Example 1 Inventive 0.340 0.625 526 60 5.9 61.9 16.5 32.9 18,466 184 Example 1 Comparative 0.319 0.618 520 74 6.2 51   14.4 25.9 15,504  65 Example 2 Inventive 0.298 0.621 514 72 6.5 39.9 11.5 19.9 12,605  41 Example 2 Inventive 0.343 0.623 528 62 6.8 47.1 12.5 21.8 13,471 370 Example 3 Table 2 summarizes the performance of the devices. The driving voltage (V), luminous efficiency (LE), external quantum efficiency (EQE) and power efficiency (PE) were measured at 1000 nits. LT₈₀ was measured under a constant current density of 40 mA/cm² from the initial luminance (L₀).

As can be seen from the table, the EL peak of Compound 1 was at 526 nm, which is 4 nm blue shifted compared to that of Compound A. This is also consistent with the PL spectra. Both compounds showed very narrow FWHMs (full width at half maximum) at 60 and 62 nm, respectively. Both compounds showed high EQE in the same structure. The driving voltage of Compound 1 at 1000 nits is slightly lower than that of compound A, 5.9 V vs. 6.2 V. Devices incorporating compounds of Formula I, such as Compound 1, also had longer device lifetimes than devices that used Compound A (184 h vs. 121 h). Compound 4 also displayed a 2 nm blue shift relative to Compound A (528 vs. 530 nm). Additionally the LT₈₀ of Compound 4 is significantly longer than that of Compound A (370 vs. 121 h). Compound 105 was also blue shifted compared to Comparative Compound D (514 nm vs. 520 nm). The color of Compound 105 was also more saturated. Compounds of Formula I have unexpected and desirable properties for use as saturated green emitters in OLEDs.

Combination with Other Materials

The materials described herein as useful for a particular layer in an organic light emitting device may be used in combination with a wide variety of other materials present in the device. For example, emissive dopants disclosed herein may be used in conjunction with a wide variety of hosts, transport layers, blocking layers, injection layers, electrodes and other layers that may be present. The materials described or referred to below are non-limiting examples of materials that may be useful in combination with the compounds disclosed herein, and one of skill in the art can readily consult the literature to identify other materials that may be useful in combination.

HIL/HTL:

A hole injecting/transporting material to be used in the present invention is not particularly limited, and any compound may be used as long as the compound is typically used as a hole injecting/transporting material. Examples of the material include, but not limit to: a phthalocyanine or porphryin derivative; an aromatic amine derivative; an indolocarbazole derivative; a polymer containing fluorohydrocarbon; a polymer with conductivity dopants; a conducting polymer, such as PEDOT/PSS; a self-assembly monomer derived from compounds such as phosphonic acid and sliane derivatives; a metal oxide derivative, such as MoO_(x); a p-type semiconducting organic compound, such as 1,4,5,8,9,12-Hexaazatriphenylenehexacarbonitrile; a metal complex, and a cross-linkable compounds.

Examples of aromatic amine derivatives used in HIL or HTL include, but not limit to the following general structures:

Each of Ar¹ to Ar⁹ is selected from the group consisting aromatic hydrocarbon cyclic compounds such as benzene, biphenyl, triphenyl, triphenylene, naphthalene, anthracene, phenalene, phenanthrene, fluorene, pyrene, chrysene, perylene, azulene; group consisting aromatic heterocyclic compounds such as dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolocarbazole, pyridylindole, pyrrolodipyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxatriazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indoxazine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, phenoxazine, benzofuropyridine, furodipyridine, benzothienopyridine, thienodipyridine, benzoselenophenopyridine, and selenophenodipyridine; and group consisting 2 to 10 cyclic structural units which are groups of the same type or different types selected from the aromatic hydrocarbon cyclic group and the aromatic heterocyclic group and are bonded to each other directly or via at least one of oxygen atom, nitrogen atom, sulfur atom, silicon atom, phosphorus atom, boron atom, chain structural unit and the aliphatic cyclic group. Wherein each Ar is further substituted by a substituent selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof.

In one aspect, Ar¹ to Ar⁹ is independently selected from the group consisting of:

k is an integer from 1 to 20; X¹⁰¹ to X¹⁰⁸ is C (including CH) or N; Z¹⁰¹ is NAr¹, O, or S; Ar¹ has the same group defined above.

Examples of metal complexes used in HIL or HTL include, but not limit to the following general formula:

Met is a metal; (Y¹⁰¹-Y¹⁰²) is a bidentate ligand, Y¹⁰¹ and Y¹⁰² are independently selected from C, N, O, P, and S; L¹⁰¹ is another ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal; and k′+k″ is the maximum number of ligands that may be attached to the metal.

In one aspect, (Y¹⁰¹-Y¹⁰²) is a 2-phenylpyridine derivative.

In another aspect, (Y¹⁰¹-Y¹⁰²) is a carbene ligand.

In another aspect, Met is selected from Ir, Pt, Os, and Zn.

In a further aspect, the metal complex has a smallest oxidation potential in solution vs. Fc⁺/Fc couple less than about 0.6 V.

Host:

The light emitting layer of the organic EL device of the present invention preferably contains at least a metal complex as light emitting material, and may contain a host material using the metal complex as a dopant material. Examples of the host material are not particularly limited, and any metal complexes or organic compounds may be used as long as the triplet energy of the host is larger than that of the dopant. While the Table below categorizes host materials as preferred for devices that emit various colors, any host material may be used with any dopant so long as the triplet criteria is satisfied.

Examples of metal complexes used as host are preferred to have the following general formula:

Met is a metal; (Y¹⁰³-Y¹⁰⁴) is a bidentate ligand, Y¹⁰³ and Y¹⁰⁴ are independently selected from C, N, O, P, and S; L¹⁰¹ is another ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal; and k′+k″ is the maximum number of ligands that may be attached to the metal.

In one aspect, the metal complexes are:

(O—N) is a bidentate ligand, having metal coordinated to atoms O and N.

In another aspect, Met is selected from Ir and Pt.

In a further aspect, (Y¹⁰³-Y¹⁰⁴) is a carbene ligand.

Examples of organic compounds used as host are selected from the group consisting aromatic hydrocarbon cyclic compounds such as benzene, biphenyl, triphenyl, triphenylene, naphthalene, anthracene, phenalene, phenanthrene, fluorene, pyrene, chrysene, perylene, azulene; group consisting aromatic heterocyclic compounds such as dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolocarbazole, pyridylindole, pyrrolodipyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxatriazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indoxazine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, phenoxazine, benzofuropyridine, furodipyridine, benzothienopyridine, thienodipyridine, benzoselenophenopyridine, and selenophenodipyridine; and group consisting 2 to 10 cyclic structural units which are groups of the same type or different types selected from the aromatic hydrocarbon cyclic group and the aromatic heterocyclic group and are bonded to each other directly or via at least one of oxygen atom, nitrogen atome, sulfur atom, silicon atom, phosphorus atom, boron atom, chain structural unit and the aliphatic cyclic group. Wherein each group is further substituted by a substituent selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof.

In one aspect, host compound contains at least one of the following groups in the molecule:

R¹⁰¹ to R¹⁰⁷ is independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, when it is aryl or heteroaryl, it has the similar definition as Ar's mentioned above.

k is an integer from 1 to 20; k′″ is an integer from 0 to 20.

X¹⁰¹ to X¹⁰⁸ is selected from C (including CH) or N.

Z¹⁰¹ and Z¹⁰² is selected from NR¹⁰¹, O, or S.

HBL:

A hole blocking layer (HBL) may be used to reduce the number of holes and/or excitons that leave the emissive layer. The presence of such a blocking layer in a device may result in substantially higher efficiencies as compared to a similar device lacking a blocking layer. Also, a blocking layer may be used to confine emission to a desired region of an OLED.

In one aspect, compound used in HBL contains the same molecule or the same functional groups used as host described above.

In another aspect, compound used in HBL contains at least one of the following groups in the molecule:

k is an integer from 1 to 20; L¹⁰¹ is another ligand, k′ is an integer from 1 to 3.

ETL:

Electron transport layer (ETL) may include a material capable of transporting electrons. Electron transport layer may be intrinsic (undoped), or doped. Doping may be used to enhance conductivity. Examples of the ETL material are not particularly limited, and any metal complexes or organic compounds may be used as long as they are typically used to transport electrons.

In one aspect, compound used in ETL contains at least one of the following groups in the molecule:

R¹⁰¹ is selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, when it is aryl or heteroaryl, it has the similar definition as Ar's mentioned above.

Ar¹ to Ar³ has the similar definition as Ar's mentioned above.

k is an integer from 1 to 20.

X¹⁰¹ to X¹⁰⁸ is selected from C (including CH) or N.

In another aspect, the metal complexes used in ETL contains, but not limit to the following general formula:

(O—N) or (N—N) is a bidentate ligand, having metal coordinated to atoms O, N or N, N; L¹⁰¹ is another ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal.

In any above-mentioned compounds used in each layer of the OLED device, the hydrogen atoms can be partially or fully deuterated. Thus, any specifically listed substituent, such as, without limitation, methyl, phenyl, pyridyl, etc. encompasses undeuterated, partially deuterated, and fully deuterated versions thereof. Similarly, classes of substituents such as, without limitation, alkyl, aryl, cycloalkyl, heteroaryl, etc. also encompass undeuterated, partially deuterated, and fully deuterated versions thereof.

In addition to and/or in combination with the materials disclosed herein, many hole injection materials, hole transporting materials, host materials, dopant materials, exciton/hole blocking layer materials, electron transporting and electron injecting materials may be used in an OLED. Non-limiting examples of the materials that may be used in an OLED in combination with materials disclosed herein are listed in Table 4 below. Table 4 lists non-limiting classes of materials, non-limiting examples of compounds for each class, and references that disclose the materials.

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EXPERIMENTAL

Chemical abbreviations used throughout the text are as follows: DME is dimethoxyethane, THF is tetrahydrofuran, DCM is dichloromethane, DMSO is dimethyl sulfoxide, dba is dibenzylidineacetone.

Synthesis of Compound 1 Preparation of 2-(3-bromopyridin-2-yl)-6-chlorophenol

(3-Chloro-2-hydroxyphenyl)boronic acid (5.0 g, 29.0 mmol) and 2,3-dibromopyridine (6.87 g, 29.0 mmol) were added to a 500 mL 2-necked flask. The reaction mixture was diluted with DME (120 mL) and water (90 mL) with the potassium carbonate (8.02 grams, 58.0 mmol) dissolved in it. This mixture was degassed for 10 minutes before addition of Pd(PPh₃)₄ (1.00 grams, 3 mol %). The reaction mixture was then stirred at gentle reflux for 5 hours. The reaction mixture was then diluted with ethyl acetate and brine. The organic layer was washed with brine and dried over sodium sulfate. The product was purified using silica gel column chromatography using a mobile phase gradient of 5-10% ethyl acetate in hexane to obtain 2.8 grams (34%) of a white solid.

Preparation of 6-chlorobenzofuro[3,2-b]pyridine

Into a 500 mL round-bottomed flask was placed 2-(3-bromopyridin-2-yl)-6-chlorophenol (4.5 g, 15.82 mmol), copper(I) iodide (0.602 g, 3.16 mmol), picolinic acid (0.779 g, 6.33 mmol) and potassium phosphate (6.71 g, 31.6 mmol in DMSO (150 mL). This mixture was stirred in an oil bath at 125° C. for 5 hours. The heat was removed and the mixture was diluted with ethyl acetate and filtered through Celite®. The filtrate was washed with brine twice then with water. The organic layer was adsorbed onto Celite® and chromatographed eluting with 40-100% dichloromethane in hexane to obtain 2.45 grams (76%) of a white solid.

Preparation of 6-(pyridin-2-yl)benzofuro[3,2-b]pyridine

2-Dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (1.12 g, 2.36 mmol), 6-chlorobenzofuro[3,2-b]pyridine (3.0 g, 14.73 mmol), and Pd₂dba₃ (0.54 g, 0.59 mmol) were added to a 250 mL 3-necked flask. The atmosphere in the flask was evacuated and backfilled with nitrogen. THF (15 mL) was added by syringe to the reaction flask. Pyridin-2-yl zinc(II) bromide (44.2 mL, 22.10 mmol) was then added and the flask was heated in an oil bath to 75° C. After 2 hours, the reaction mixture was cooled and diluted with aqueous sodium bicarbonate and ethyl acetate. The aqueous layer was extracted with ethyl acetate and the combined organic layers were dried with sodium sulfate. The crude product was purified using silica gel column chromatography eluted with 0-5% methanol in DCM to give 3.2 g (88%) of desired product. This product was further purified by column chromatography over silica gel using DCM followed by up to 40% ethyl acetate/DCM mixture as eluent to obtain 2.8 g (77%) 6-(pyridin-2-yl)benzofuro[3,2-b]pyridine as a white solid.

Preparation of Compound 1

6-(Pyridin-2-yl)benzofuro[3,2-b]pyridine (2.71 g, 11.00 mmol) and iridium triflate intermediate (1.964 g, 2.75 mmol) were added to ethanol (90 mL) and degassed for 15 minutes with nitrogen. The reaction mixture was heated to reflux until the iridium triflate intermediate disappeared. The reaction mixture was cooled to room temperature and filtered through a Celite® plug and washed with ethanol and hexanes. The yellow color precipitate was dissolved in DCM. Solvents were removed under reduced pressure from the DCM solution to give 1.65 g of crude material which was purified by silica gel column chromatography using 1:1 DCM/hexanes (v/v) followed by 95:5 DCM/methanol (v/v) as eluent. The isolated material was further purified by reversed phase column chromatography over C18 stationary phase using 95:5% acetonitrile/water as eluent to give 0.7 g (34%) of Compound 1.

Synthesis of Compound 4 Preparation of 3-(2,3-dimethoxyphenyl)pyridin-2-amine

3-Bromopyridin-2-amine (23.77 g, 137 mmol), (2,3-dimethoxyphenyl)boronic acid (25 g, 137 mmol), and Pd(Ph₃P)₄ (4.76 g, 4.12 mmol) were added to a 2 L 2-necked flask. The reaction mixture was diluted with THF (600 mL). A solution of water (300 mL) with sodium carbonate (14.56 g, 137 mmol) dissolved in it was then added. This mixture was degassed and stirred at reflux for 20 hours. The mixture was then diluted with ethyl acetate and brine. The organic layer was washed with water and dried over sodium sulfate. The product was chromatographed on a silica gel column eluted with 0-50% ethyl acetate in DCM to obtain 28.9 g (91%) of the desired material.

Preparation of 8-methoxybenzofuro[2,3-b]pyridine

3-(2,3-Dimethoxyphenyl)pyridin-2-amine (14 g, 60.8 mmol) was added to a 500 mL round bottom flask. Acetic acid (220 mL) and THF (74 mL) were added. This mixture was stirred in a salt water ice bath. t-Butyl nitrite (14.5 mL, 109 mmol) was added drop-wise. The reaction mixture was stirred in the bath for 3 hours and then was allowed to warm ambient temperature with stirring. This mixture was evaporated in vacuo and partitioned between ethyl acetate and aqueous sodium bicarbonate. The product was chromatographed on silica gel. Elution with 25% ethyl acetate in hexane gave 6.61 g (54.6%) of 8-methoxybenzofuro[2,3-b]pyridine as a white solid.

Preparation of benzofuro[2,3-b]pyridin-8-ol

8-Methoxybenzofuro[2,3-b]pyridine (6.6 g, 33.1 mmol) was added along with pyridine HCl (25 g) to a 250 mL round bottom flask. This mixture was stirred in an oil bath at 200° C. for 10 hous. Aqueous sodium bicarbonate and DCM were added to the mixture. The organic layer was dried and evaporated to a brown solid to obtain 5.07 g (83%) of the desired.

Preparation of benzofuro[2,3-b]pyridin-8-yl trifluoromethanesulfonate

Benzofuro[2,3-b]pyridin-8-ol (5.5 g, 29.7 mmol) was added to a 500 mL round bottom flask and DCM (250 mL) was added. Pyridine (6.01 mL, 74.3 mmol) was added and the flask was placed in an ice bath. Triflic anhydride (7.5 mL, 44.6 mmol) was dissolved in DCM (30 mL) and added drop-wise over 10 min. The bath was removed and the reaction was allowed to warm to ambient temperature and stirred overnight. The solution was washed with saturated sodium bicarbonate solution then water. The product was chromatographed on a silica gel column, which was eluted with DCM to obtain 8.1 g (86%) of the desired product as a white solid was obtained.

Preparation of 8-(pyridin-2-yl)benzofuro[2,3-b]pyridine

Benzofuro[2,3-b]pyridin-8-yl trifluoromethanesulfonate (4 g, 12.61 mmol), X-Phos (0.481 g, 1.009 mmol) and Pd₂dba₃ (0.231 g, 0.252 mmol) were added to a 250 mL 3-necked flask. The atmosphere in the flask was evacuated and backfilled with nitrogen. THF (40 mL) and pyridin-2-yl zinc(II) bromide (37.8 mL, 18.91 mmol) were added. This mixture was stirred in an oil bath at 70° C. for 4 hours. The mixture was filtered through Celite®, and the filter cake was washed with ethyl acetate. The crude material was adsorbed on to Celite® and chromatographed on a silica gel column eluted with 25-50% ethyl acetate in hexane to obtain 2.7 g (87%) of the desired product as a white solid.

Preparation of Compound 4

8-(Pyridin-2-yl)benzofuro[2,3-b]pyridine (3.8 g, 15.4 mmol) and iridium complex (3.67 g, 5.10 mmol) were combined in a 500 mL round bottom flask. 2-Ethoxyethanol (125 mL) and dimethylformamide (125 mL) were each added and the mixture was stirred in an oil bath at 135° C. for 18 hours. The mixture was concentrated first on a rotary evaporator then on a Kugelrohr apparatus. The residue was purified on a silica gel column eluted with 0-3% ethyl acetate in dichloromethane to afford 2.48 g (65%) of the desired product as yellow solid.

Synthesis of Compound 105 Preparation of 2-(5-chloro-2-methoxyphenyl)pyridin-3-amine

(5-Chloro-2-methoxyphenyl)boronic acid (12 g, 64.4 mmol), 2-bromopyridin-3-amine (11.14 g, 64.4 mmol) potassium carbonate (17.79 g, 129 mmol) and Pd(Ph₃P)₄ (3.72 g, 3.22 mmol) were added to a 1 L 3-necked flask. The reaction mixture was diluted with DME (300 mL) and water (150 mL). This mixture was stirred at reflux for 3 hours. The mixture was filtered through Celite® and the filter cake was washed with ethyl acetate. Water was added and the layers were separated. The organic layer was chromatographed on a silica gel column which was eluted with 0-10% ethyl acetate in DCM to give 10.9 g (72%) of the desired compound.

Preparation of 8-chlorobenzofuro[3,2-b]pyridine

In a 1 L round-bottomed flask was placed 2-(5-chloro-2-methoxyphenyl)pyridin-3-amine (10.9 g, 46.4 mmol) and THF (85 mL). Tetrafluoroboric acid (85 mL, 678 mmol) was added along with water (50 mL). The flask was placed in an ethylene glycol-dry ice bath. Sodium nitrite (6.73 g, 98 mmol) was dissolved water (30 mL) and added drop-wise to the flask. The solution turned from yellow to orange with evolution of gas. This reaction mixture was stirred in the bath for 4 hours, and allowed to warm to ambient temperature. Aqueous saturated sodium bicarbonate (500 mL) was added. The product was extracted with DCM and chromatographed on a 200 gram silica gel column eluted with 20-40% ethyl acetate in hexane to obtain 3.26 g (34.5%) of the desired product as a white solid.

Preparation of 8-(pyridin-2-yl)benzofuro[3,2-b]pyridine

8-Chlorobenzofuro[3,2-b]pyridine (3.2 g, 15.72 mmol) and Pd₂dba₃ (0.288 g, 0.314 mmol) and X-Phos (0.599 g, 1.257 mmol) were added to a 250 mL 3-necked flask. The atmosphere in the flask was evacuated and backfilled with nitrogen. THF (40 mL) was added. Next, pyridin-2-yl zinc(II) bromide (47.1 mL, 23.57 mmol) was added. This mixture was stirred in an oil bath at 70° C. for 4 hours. The mixture was then diluted with aqueous sodium bicarbonate and ethyl acetate. This mixture was filtered through Celite®, and the organic and aqueous layers were separated. The aqueous layer was extracted once more with ethyl acetate. The combined organic layers were chromatographed on a 150 gram silica gel column eluted first with 20% ethyl acetate in hexane then 10% ethyl acetate in DCM and finally 2.5% methanol in DCM. The eluent triturated in hexane and filtered giving 3.2 g (83%) of the desired product as a beige powder.

Preparation of Compound 105

Iridium complex (2.99 g, 4.20 mmol) and 8-(pyridin-2-yl)benzofuro[3,2-b]pyridine (3.1 g, 12.59 mmol) were each added to a 250 mL round bottom flask. 2-Ethoxyethanol (50 mL) and dimethylformamide (50 mL) were added and this was stirred in an oil bath at 150° C. for 18 hours. The flask was placed on a Kugelrohr apparatus and the solvents were removed. The crude material was chromatographed on a silica gel column eluted with 0-10% ethyl acetate in DCM to obtain 2.07 g (66%) of the desired compound.

It is understood that the various embodiments described herein are by way of example only, and are not intended to limit the scope of the invention. For example, many of the materials and structures described herein may be substituted with other materials and structures without deviating from the spirit of the invention. The present invention as claimed may therefore include variations from the particular examples and preferred embodiments described herein, as will be apparent to one of skill in the art. It is understood that various theories as to why the invention works are not intended to be limiting. 

The invention claimed is:
 1. A compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), having the structure:

wherein A¹, A², A³, A⁴, A⁶, A⁷, and A⁸ comprise carbon; wherein A⁵ is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein (i) A⁴ is bonded to ring B and A³ is bonded to Ir, (ii) A³ is bonded to ring B and A² is bonded to Ir, (iii) A² is bonded to ring B and A¹ is bonded to Ir, (iv) A¹ is bonded to ring B and A² is bonded to Ir, or (v) A³ is bonded to ring B and A⁴ is bonded to Ir; wherein X is O, S, or Se; wherein R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution; wherein any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring; wherein R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein n is an integer from 1 to
 2. 2. The compound of claim 1, wherein n is
 1. 3. The compound of claim 1, wherein the compound has the formula:


4. The compound of claim 3, wherein the compound has the formula:


5. The compound of claim 1, wherein X is O.
 6. The compound of claim 1, wherein R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, alkyl, and combinations thereof.
 7. The compound of claim 1, wherein at least one R² is alkyl.
 8. The compound of claim 1, wherein at least one R³ is alkyl.
 9. The compound of claim 1, wherein L_(B) is selected from the group consisting of:


10. The compound of claim 1, wherein (ii) A³ is bonded to ring B and A² is bonded to Ir.
 11. The compound of claim 1, wherein (iii) A² is bonded to ring B and A¹ is bonded to Ir.
 12. The compound of claim 1, wherein (iv) A¹ is bonded to ring B and A² is bonded to Ir.
 13. The compound of claim 1, wherein (v) A³ is bonded to ring B and A⁴ is bonded to Ir.
 14. A first device comprising a first organic light emitting device, comprising: an anode; a cathode; and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), having the structure:

wherein A¹, A², A³, A⁴, A⁶, A⁷, and A⁸ comprise carbon; wherein A⁵ is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein (i) A⁴ is bonded to ring B and A³ is bonded to Ir, (ii) A³ is bonded to ring B and A² is bonded to Ir, (iii) A² is bonded to ring B and A¹ is bonded to Ir, (iv) A¹ is bonded to ring B and A² is bonded to Ir, or (v) A³ is bonded to ring B and A⁴ is bonded to Ir; wherein X is O, S, or Se; wherein R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution; wherein any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring; wherein R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein n is an integer from 1 to
 2. 15. The first device of claim 14, wherein the organic layer is an emissive layer and the compound is an emissive dopant or a non-emissive dopant.
 16. The first device of claim 14, wherein the organic layer further comprises a host, and wherein the host comprises a triphenylene containing benzo-fused thiophene or benzo-fused furan; wherein any substituent in the host is an unfused substituent independently selected from the group consisting of C_(n)H_(2n+1), OC_(n)H_(2n+1), OAr₁, N(C_(n)H_(2n+1))₂, N(Ar₁)(Ar₂), CH═CH—C_(n)H_(2n+1), C≡CC_(n)H_(2n+1), Ar₁, Ar₁—Ar₂, and C_(n)H₂—Ar₁; wherein n is from 1 to 10; and wherein Ar₁ and Ar₂ are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.
 17. The first device of claim 14, wherein the organic layer further comprises a host, and wherein the host comprises at least one chemical group selected from the group consisting of carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.
 18. The first device of claim 14, wherein the organic layer further comprises a host, and wherein the host is selected from the group consisting of:

and combinations thereof.
 19. A consumer product comprising an organic light-emitting device comprising: an anode; a cathode; and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L_(A))_(n)(L_(B))_(3-n), having the structure:

wherein A¹, A², A³, A⁴, A⁶, A⁷, and A⁸ comprise carbon; wherein A⁵ is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein (i) A⁴ is bonded to ring B and A³ is bonded to Ir, (ii) A³ is bonded to ring B and A² is bonded to Ir, (iii) A² is bonded to ring B and A¹ is bonded to Ir, (iv) A¹ is bonded to ring B and A² is bonded to Ir, or (v) A³ is bonded to ring B and A⁴ is bonded to Ir; wherein X is O, S, or Se; wherein R¹, R², R³, and R⁴ independently represent mono-, di-, tri-, tetra-substitution, or no substitution; wherein any adjacent substitutions in R¹, R², R³, and R⁴ are optionally linked together to form a ring; wherein R¹, R², R³, and R⁴ are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein n is an integer from 1 to
 2. 20. The consumer product of claim 19, wherein the consumer product is selected from the group consisting of flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads-up displays, fully or partially transparent displays, flexible displays, laser printers, telephones, mobile phones, tablets, phablets, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, virtual reality or augmented reality displays, vehicles, wall screens, theater or stadium screens, and signs. 